128407860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{457}}^1$

素因数の和:702

約数の個数: 144

約数和(自身を含む): 448121856

約数和(自身を除く): 319713996

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 223, 252, 315, 420, 446, 457, 630, 669, 892, 914, 1115, 1260, 1338, 1371, 1561, 1828, 2007, 2230, 2285, 2676, 2742, 3122, 3199, 3345, 4014, 4113, 4460, 4570, 4683, 5484, 6244, 6398, 6690, 6855, 7805, 8028, 8226, 9140, 9366, 9597, 10035, 12796, 13380, 13710, 14049, 15610, 15995, 16452, 18732, 19194, 20070, 20565, 23415, 27420, 28098, 28791, 31220, 31990, 38388, 40140, 41130, 46830, 47985, 56196, 57582, 63980, 70245, 82260, 93660, 95970, 101911, 115164, 140490, 143955, 191940, 203822, 280980, 287910, 305733, 407644, 509555, 575820, 611466, 713377, 917199, 1019110, 1222932, 1426754, 1528665, 1834398, 2038220, 2140131, 2853508, 3057330, 3566885, 3668796, 4280262, 4585995, 6114660, 6420393, 7133770, 8560524, 9171990, 10700655, 12840786, 14267540, 18343980, 21401310, 25681572, 32101965, 42802620, 64203930, 128407860]

約数ペア:

[(1, 128407860), (2, 64203930), (3, 42802620), (4, 32101965), (5, 25681572), (6, 21401310), (7, 18343980), (9, 14267540), (10, 12840786), (12, 10700655), (14, 9171990), (15, 8560524), (18, 7133770), (20, 6420393), (21, 6114660), (28, 4585995), (30, 4280262), (35, 3668796), (36, 3566885), (42, 3057330), (45, 2853508), (60, 2140131), (63, 2038220), (70, 1834398), (84, 1528665), (90, 1426754), (105, 1222932), (126, 1019110), (140, 917199), (180, 713377), (210, 611466), (223, 575820), (252, 509555), (315, 407644), (420, 305733), (446, 287910), (457, 280980), (630, 203822), (669, 191940), (892, 143955), (914, 140490), (1115, 115164), (1260, 101911), (1338, 95970), (1371, 93660), (1561, 82260), (1828, 70245), (2007, 63980), (2230, 57582), (2285, 56196), (2676, 47985), (2742, 46830), (3122, 41130), (3199, 40140), (3345, 38388), (4014, 31990), (4113, 31220), (4460, 28791), (4570, 28098), (4683, 27420), (5484, 23415), (6244, 20565), (6398, 20070), (6690, 19194), (6855, 18732), (7805, 16452), (8028, 15995), (8226, 15610), (9140, 14049), (9366, 13710), (9597, 13380), (10035, 12796)]