20557530

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:245

約数の個数: 128

約数和(自身を含む): 63936000

約数和(自身を除く): 43378470

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 73, 90, 105, 126, 135, 146, 149, 189, 210, 219, 270, 298, 315, 365, 378, 438, 447, 511, 630, 657, 730, 745, 894, 945, 1022, 1043, 1095, 1314, 1341, 1490, 1533, 1890, 1971, 2086, 2190, 2235, 2555, 2682, 3066, 3129, 3285, 3942, 4023, 4470, 4599, 5110, 5215, 6258, 6570, 6705, 7665, 8046, 9198, 9387, 9855, 10430, 10877, 13410, 13797, 15330, 15645, 18774, 19710, 20115, 21754, 22995, 27594, 28161, 31290, 32631, 40230, 45990, 46935, 54385, 56322, 65262, 68985, 76139, 93870, 97893, 108770, 137970, 140805, 152278, 163155, 195786, 228417, 281610, 293679, 326310, 380695, 456834, 489465, 587358, 685251, 761390, 978930, 1142085, 1370502, 1468395, 2055753, 2284170, 2936790, 3426255, 4111506, 6852510, 10278765, 20557530]

約数ペア:

[(1, 20557530), (2, 10278765), (3, 6852510), (5, 4111506), (6, 3426255), (7, 2936790), (9, 2284170), (10, 2055753), (14, 1468395), (15, 1370502), (18, 1142085), (21, 978930), (27, 761390), (30, 685251), (35, 587358), (42, 489465), (45, 456834), (54, 380695), (63, 326310), (70, 293679), (73, 281610), (90, 228417), (105, 195786), (126, 163155), (135, 152278), (146, 140805), (149, 137970), (189, 108770), (210, 97893), (219, 93870), (270, 76139), (298, 68985), (315, 65262), (365, 56322), (378, 54385), (438, 46935), (447, 45990), (511, 40230), (630, 32631), (657, 31290), (730, 28161), (745, 27594), (894, 22995), (945, 21754), (1022, 20115), (1043, 19710), (1095, 18774), (1314, 15645), (1341, 15330), (1490, 13797), (1533, 13410), (1890, 10877), (1971, 10430), (2086, 9855), (2190, 9387), (2235, 9198), (2555, 8046), (2682, 7665), (3066, 6705), (3129, 6570), (3285, 6258), (3942, 5215), (4023, 5110), (4470, 4599)]