19997465880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{355321}}^1$

素因数の和:355409

約数の個数: 128

約数和(自身を含む): 69586260480

約数和(自身を除く): 49588794600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 67, 70, 84, 105, 120, 134, 140, 168, 201, 210, 268, 280, 335, 402, 420, 469, 536, 670, 804, 840, 938, 1005, 1340, 1407, 1608, 1876, 2010, 2345, 2680, 2814, 3752, 4020, 4690, 5628, 7035, 8040, 9380, 11256, 14070, 18760, 28140, 56280, 355321, 710642, 1065963, 1421284, 1776605, 2131926, 2487247, 2842568, 3553210, 4263852, 4974494, 5329815, 7106420, 7461741, 8527704, 9948988, 10659630, 12436235, 14212840, 14923482, 19897976, 21319260, 23806507, 24872470, 29846964, 37308705, 42638520, 47613014, 49744940, 59693928, 71419521, 74617410, 95226028, 99489880, 119032535, 142839042, 149234820, 166645549, 190452056, 238065070, 285678084, 298469640, 333291098, 357097605, 476130140, 499936647, 571356168, 666582196, 714195210, 833227745, 952260280, 999873294, 1333164392, 1428390420, 1666455490, 1999746588, 2499683235, 2856780840, 3332910980, 3999493176, 4999366470, 6665821960, 9998732940, 19997465880]

約数ペア:

[(1, 19997465880), (2, 9998732940), (3, 6665821960), (4, 4999366470), (5, 3999493176), (6, 3332910980), (7, 2856780840), (8, 2499683235), (10, 1999746588), (12, 1666455490), (14, 1428390420), (15, 1333164392), (20, 999873294), (21, 952260280), (24, 833227745), (28, 714195210), (30, 666582196), (35, 571356168), (40, 499936647), (42, 476130140), (56, 357097605), (60, 333291098), (67, 298469640), (70, 285678084), (84, 238065070), (105, 190452056), (120, 166645549), (134, 149234820), (140, 142839042), (168, 119032535), (201, 99489880), (210, 95226028), (268, 74617410), (280, 71419521), (335, 59693928), (402, 49744940), (420, 47613014), (469, 42638520), (536, 37308705), (670, 29846964), (804, 24872470), (840, 23806507), (938, 21319260), (1005, 19897976), (1340, 14923482), (1407, 14212840), (1608, 12436235), (1876, 10659630), (2010, 9948988), (2345, 8527704), (2680, 7461741), (2814, 7106420), (3752, 5329815), (4020, 4974494), (4690, 4263852), (5628, 3553210), (7035, 2842568), (8040, 2487247), (9380, 2131926), (11256, 1776605), (14070, 1421284), (18760, 1065963), (28140, 710642), (56280, 355321)]