281568280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{397}}^1$

素因数の和:581

約数の個数: 128

約数和(自身を含む): 773712000

約数和(自身を除く): 492143720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 149, 170, 238, 280, 298, 340, 397, 476, 595, 596, 680, 745, 794, 952, 1043, 1190, 1192, 1490, 1588, 1985, 2086, 2380, 2533, 2779, 2980, 3176, 3970, 4172, 4760, 5066, 5215, 5558, 5960, 6749, 7940, 8344, 10132, 10430, 11116, 12665, 13498, 13895, 15880, 17731, 20264, 20860, 22232, 25330, 26996, 27790, 33745, 35462, 41720, 47243, 50660, 53992, 55580, 59153, 67490, 70924, 88655, 94486, 101320, 111160, 118306, 134980, 141848, 177310, 188972, 236215, 236612, 269960, 295765, 354620, 377944, 414071, 472430, 473224, 591530, 709240, 828142, 944860, 1005601, 1183060, 1656284, 1889720, 2011202, 2070355, 2366120, 3312568, 4022404, 4140710, 5028005, 7039207, 8044808, 8281420, 10056010, 14078414, 16562840, 20112020, 28156828, 35196035, 40224040, 56313656, 70392070, 140784140, 281568280]

約数ペア:

[(1, 281568280), (2, 140784140), (4, 70392070), (5, 56313656), (7, 40224040), (8, 35196035), (10, 28156828), (14, 20112020), (17, 16562840), (20, 14078414), (28, 10056010), (34, 8281420), (35, 8044808), (40, 7039207), (56, 5028005), (68, 4140710), (70, 4022404), (85, 3312568), (119, 2366120), (136, 2070355), (140, 2011202), (149, 1889720), (170, 1656284), (238, 1183060), (280, 1005601), (298, 944860), (340, 828142), (397, 709240), (476, 591530), (595, 473224), (596, 472430), (680, 414071), (745, 377944), (794, 354620), (952, 295765), (1043, 269960), (1190, 236612), (1192, 236215), (1490, 188972), (1588, 177310), (1985, 141848), (2086, 134980), (2380, 118306), (2533, 111160), (2779, 101320), (2980, 94486), (3176, 88655), (3970, 70924), (4172, 67490), (4760, 59153), (5066, 55580), (5215, 53992), (5558, 50660), (5960, 47243), (6749, 41720), (7940, 35462), (8344, 33745), (10132, 27790), (10430, 26996), (11116, 25330), (12665, 22232), (13498, 20860), (13895, 20264), (15880, 17731)]