19648980

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1$

素因数の和:348

約数の個数: 144

約数和(自身を含む): 66777984

約数和(自身を除く): 47129004

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 108, 117, 130, 135, 156, 162, 180, 195, 234, 243, 260, 270, 311, 324, 351, 390, 405, 468, 486, 540, 585, 622, 702, 780, 810, 933, 972, 1053, 1170, 1215, 1244, 1404, 1555, 1620, 1755, 1866, 2106, 2340, 2430, 2799, 3110, 3159, 3510, 3732, 4043, 4212, 4665, 4860, 5265, 5598, 6220, 6318, 7020, 8086, 8397, 9330, 10530, 11196, 12129, 12636, 13995, 15795, 16172, 16794, 18660, 20215, 21060, 24258, 25191, 27990, 31590, 33588, 36387, 40430, 41985, 48516, 50382, 55980, 60645, 63180, 72774, 75573, 80860, 83970, 100764, 109161, 121290, 125955, 145548, 151146, 167940, 181935, 218322, 242580, 251910, 302292, 327483, 363870, 377865, 436644, 503820, 545805, 654966, 727740, 755730, 982449, 1091610, 1309932, 1511460, 1637415, 1964898, 2183220, 3274830, 3929796, 4912245, 6549660, 9824490, 19648980]

約数ペア:

[(1, 19648980), (2, 9824490), (3, 6549660), (4, 4912245), (5, 3929796), (6, 3274830), (9, 2183220), (10, 1964898), (12, 1637415), (13, 1511460), (15, 1309932), (18, 1091610), (20, 982449), (26, 755730), (27, 727740), (30, 654966), (36, 545805), (39, 503820), (45, 436644), (52, 377865), (54, 363870), (60, 327483), (65, 302292), (78, 251910), (81, 242580), (90, 218322), (108, 181935), (117, 167940), (130, 151146), (135, 145548), (156, 125955), (162, 121290), (180, 109161), (195, 100764), (234, 83970), (243, 80860), (260, 75573), (270, 72774), (311, 63180), (324, 60645), (351, 55980), (390, 50382), (405, 48516), (468, 41985), (486, 40430), (540, 36387), (585, 33588), (622, 31590), (702, 27990), (780, 25191), (810, 24258), (933, 21060), (972, 20215), (1053, 18660), (1170, 16794), (1215, 16172), (1244, 15795), (1404, 13995), (1555, 12636), (1620, 12129), (1755, 11196), (1866, 10530), (2106, 9330), (2340, 8397), (2430, 8086), (2799, 7020), (3110, 6318), (3159, 6220), (3510, 5598), (3732, 5265), (4043, 4860), (4212, 4665)]