28507920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:333

約数の個数: 160

約数和(自身を含む): 102850560

約数和(自身を除く): 74342640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 71, 80, 84, 105, 112, 120, 140, 142, 168, 210, 213, 239, 240, 280, 284, 336, 355, 420, 426, 478, 497, 560, 568, 710, 717, 840, 852, 956, 994, 1065, 1136, 1195, 1420, 1434, 1491, 1673, 1680, 1704, 1912, 1988, 2130, 2390, 2485, 2840, 2868, 2982, 3346, 3408, 3585, 3824, 3976, 4260, 4780, 4970, 5019, 5680, 5736, 5964, 6692, 7170, 7455, 7952, 8365, 8520, 9560, 9940, 10038, 11472, 11928, 13384, 14340, 14910, 16730, 16969, 17040, 19120, 19880, 20076, 23856, 25095, 26768, 28680, 29820, 33460, 33938, 39760, 40152, 50190, 50907, 57360, 59640, 66920, 67876, 80304, 84845, 100380, 101814, 118783, 119280, 133840, 135752, 169690, 200760, 203628, 237566, 254535, 271504, 339380, 356349, 401520, 407256, 475132, 509070, 593915, 678760, 712698, 814512, 950264, 1018140, 1187830, 1357520, 1425396, 1781745, 1900528, 2036280, 2375660, 2850792, 3563490, 4072560, 4751320, 5701584, 7126980, 9502640, 14253960, 28507920]

約数ペア:

[(1, 28507920), (2, 14253960), (3, 9502640), (4, 7126980), (5, 5701584), (6, 4751320), (7, 4072560), (8, 3563490), (10, 2850792), (12, 2375660), (14, 2036280), (15, 1900528), (16, 1781745), (20, 1425396), (21, 1357520), (24, 1187830), (28, 1018140), (30, 950264), (35, 814512), (40, 712698), (42, 678760), (48, 593915), (56, 509070), (60, 475132), (70, 407256), (71, 401520), (80, 356349), (84, 339380), (105, 271504), (112, 254535), (120, 237566), (140, 203628), (142, 200760), (168, 169690), (210, 135752), (213, 133840), (239, 119280), (240, 118783), (280, 101814), (284, 100380), (336, 84845), (355, 80304), (420, 67876), (426, 66920), (478, 59640), (497, 57360), (560, 50907), (568, 50190), (710, 40152), (717, 39760), (840, 33938), (852, 33460), (956, 29820), (994, 28680), (1065, 26768), (1136, 25095), (1195, 23856), (1420, 20076), (1434, 19880), (1491, 19120), (1673, 17040), (1680, 16969), (1704, 16730), (1912, 14910), (1988, 14340), (2130, 13384), (2390, 11928), (2485, 11472), (2840, 10038), (2868, 9940), (2982, 9560), (3346, 8520), (3408, 8365), (3585, 7952), (3824, 7455), (3976, 7170), (4260, 6692), (4780, 5964), (4970, 5736), (5019, 5680)]