20912179640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1\times {\mathrm{2551}}^1$

素因数の和:3205

約数の個数: 128

約数和(自身を含む): 53094666240

約数和(自身を除く): 32182486600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 601, 620, 682, 1202, 1240, 1364, 1705, 2404, 2551, 2728, 3005, 3410, 4808, 5102, 6010, 6611, 6820, 10204, 12020, 12755, 13222, 13640, 18631, 20408, 24040, 25510, 26444, 28061, 33055, 37262, 51020, 52888, 56122, 66110, 74524, 79081, 93155, 102040, 112244, 132220, 140305, 149048, 158162, 186310, 204941, 224488, 264440, 280610, 316324, 372620, 395405, 409882, 561220, 632648, 745240, 790810, 819764, 869891, 1024705, 1122440, 1533151, 1581620, 1639528, 1739782, 2049410, 3066302, 3163240, 3479564, 4098820, 4349455, 6132604, 6959128, 7665755, 8197640, 8698910, 12265208, 15331510, 16864661, 17397820, 30663020, 33729322, 34795640, 47527681, 61326040, 67458644, 84323305, 95055362, 134917288, 168646610, 190110724, 237638405, 337293220, 380221448, 475276810, 522804491, 674586440, 950553620, 1045608982, 1901107240, 2091217964, 2614022455, 4182435928, 5228044910, 10456089820, 20912179640]

約数ペア:

[(1, 20912179640), (2, 10456089820), (4, 5228044910), (5, 4182435928), (8, 2614022455), (10, 2091217964), (11, 1901107240), (20, 1045608982), (22, 950553620), (31, 674586440), (40, 522804491), (44, 475276810), (55, 380221448), (62, 337293220), (88, 237638405), (110, 190110724), (124, 168646610), (155, 134917288), (220, 95055362), (248, 84323305), (310, 67458644), (341, 61326040), (440, 47527681), (601, 34795640), (620, 33729322), (682, 30663020), (1202, 17397820), (1240, 16864661), (1364, 15331510), (1705, 12265208), (2404, 8698910), (2551, 8197640), (2728, 7665755), (3005, 6959128), (3410, 6132604), (4808, 4349455), (5102, 4098820), (6010, 3479564), (6611, 3163240), (6820, 3066302), (10204, 2049410), (12020, 1739782), (12755, 1639528), (13222, 1581620), (13640, 1533151), (18631, 1122440), (20408, 1024705), (24040, 869891), (25510, 819764), (26444, 790810), (28061, 745240), (33055, 632648), (37262, 561220), (51020, 409882), (52888, 395405), (56122, 372620), (66110, 316324), (74524, 280610), (79081, 264440), (93155, 224488), (102040, 204941), (112244, 186310), (132220, 158162), (140305, 149048)]