19811854480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{691}}^1\times {\mathrm{1051}}^1$

素因数の和:1797

約数の個数: 160

約数和(自身を含む): 51995529216

約数和(自身を除く): 32183674736

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 691, 880, 1051, 1240, 1364, 1382, 1705, 2102, 2480, 2728, 2764, 3410, 3455, 4204, 5255, 5456, 5528, 6820, 6910, 7601, 8408, 10510, 11056, 11561, 13640, 13820, 15202, 16816, 21020, 21421, 23122, 27280, 27640, 30404, 32581, 38005, 42040, 42842, 46244, 55280, 57805, 60808, 65162, 76010, 84080, 85684, 92488, 107105, 115610, 121616, 130324, 152020, 162905, 171368, 184976, 214210, 231220, 235631, 260648, 304040, 325810, 342736, 358391, 428420, 462440, 471262, 521296, 608080, 651620, 716782, 726241, 856840, 924880, 942524, 1178155, 1303240, 1433564, 1452482, 1713680, 1791955, 1885048, 2356310, 2606480, 2867128, 2904964, 3583910, 3631205, 3770096, 4712620, 5734256, 5809928, 7167820, 7262410, 7988651, 9425240, 11619856, 14335640, 14524820, 15977302, 18850480, 22513471, 28671280, 29049640, 31954604, 39943255, 45026942, 58099280, 63909208, 79886510, 90053884, 112567355, 127818416, 159773020, 180107768, 225134710, 247648181, 319546040, 360215536, 450269420, 495296362, 639092080, 900538840, 990592724, 1238240905, 1801077680, 1981185448, 2476481810, 3962370896, 4952963620, 9905927240, 19811854480]

約数ペア:

[(1, 19811854480), (2, 9905927240), (4, 4952963620), (5, 3962370896), (8, 2476481810), (10, 1981185448), (11, 1801077680), (16, 1238240905), (20, 990592724), (22, 900538840), (31, 639092080), (40, 495296362), (44, 450269420), (55, 360215536), (62, 319546040), (80, 247648181), (88, 225134710), (110, 180107768), (124, 159773020), (155, 127818416), (176, 112567355), (220, 90053884), (248, 79886510), (310, 63909208), (341, 58099280), (440, 45026942), (496, 39943255), (620, 31954604), (682, 29049640), (691, 28671280), (880, 22513471), (1051, 18850480), (1240, 15977302), (1364, 14524820), (1382, 14335640), (1705, 11619856), (2102, 9425240), (2480, 7988651), (2728, 7262410), (2764, 7167820), (3410, 5809928), (3455, 5734256), (4204, 4712620), (5255, 3770096), (5456, 3631205), (5528, 3583910), (6820, 2904964), (6910, 2867128), (7601, 2606480), (8408, 2356310), (10510, 1885048), (11056, 1791955), (11561, 1713680), (13640, 1452482), (13820, 1433564), (15202, 1303240), (16816, 1178155), (21020, 942524), (21421, 924880), (23122, 856840), (27280, 726241), (27640, 716782), (30404, 651620), (32581, 608080), (38005, 521296), (42040, 471262), (42842, 462440), (46244, 428420), (55280, 358391), (57805, 342736), (60808, 325810), (65162, 304040), (76010, 260648), (84080, 235631), (85684, 231220), (92488, 214210), (107105, 184976), (115610, 171368), (121616, 162905), (130324, 152020)]