398338640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{307}}^1\times {\mathrm{331}}^1$

素因数の和:665

約数の個数: 120

約数和(自身を含む): 1084118112

約数和(自身を除く): 685779472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 307, 331, 392, 490, 560, 614, 662, 784, 980, 1228, 1324, 1535, 1655, 1960, 2149, 2317, 2456, 2648, 3070, 3310, 3920, 4298, 4634, 4912, 5296, 6140, 6620, 8596, 9268, 10745, 11585, 12280, 13240, 15043, 16219, 17192, 18536, 21490, 23170, 24560, 26480, 30086, 32438, 34384, 37072, 42980, 46340, 60172, 64876, 75215, 81095, 85960, 92680, 101617, 120344, 129752, 150430, 162190, 171920, 185360, 203234, 240688, 259504, 300860, 324380, 406468, 508085, 601720, 648760, 711319, 812936, 1016170, 1203440, 1297520, 1422638, 1625872, 2032340, 2845276, 3556595, 4064680, 4979233, 5690552, 7113190, 8129360, 9958466, 11381104, 14226380, 19916932, 24896165, 28452760, 39833864, 49792330, 56905520, 79667728, 99584660, 199169320, 398338640]

約数ペア:

[(1, 398338640), (2, 199169320), (4, 99584660), (5, 79667728), (7, 56905520), (8, 49792330), (10, 39833864), (14, 28452760), (16, 24896165), (20, 19916932), (28, 14226380), (35, 11381104), (40, 9958466), (49, 8129360), (56, 7113190), (70, 5690552), (80, 4979233), (98, 4064680), (112, 3556595), (140, 2845276), (196, 2032340), (245, 1625872), (280, 1422638), (307, 1297520), (331, 1203440), (392, 1016170), (490, 812936), (560, 711319), (614, 648760), (662, 601720), (784, 508085), (980, 406468), (1228, 324380), (1324, 300860), (1535, 259504), (1655, 240688), (1960, 203234), (2149, 185360), (2317, 171920), (2456, 162190), (2648, 150430), (3070, 129752), (3310, 120344), (3920, 101617), (4298, 92680), (4634, 85960), (4912, 81095), (5296, 75215), (6140, 64876), (6620, 60172), (8596, 46340), (9268, 42980), (10745, 37072), (11585, 34384), (12280, 32438), (13240, 30086), (15043, 26480), (16219, 24560), (17192, 23170), (18536, 21490)]