19898970

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:264

約数の個数: 128

約数和(自身を含む): 60673536

約数和(自身を除く): 40774566

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 37, 39, 42, 65, 70, 74, 78, 91, 105, 111, 130, 182, 185, 195, 197, 210, 222, 259, 273, 370, 390, 394, 455, 481, 518, 546, 555, 591, 777, 910, 962, 985, 1110, 1182, 1295, 1365, 1379, 1443, 1554, 1970, 2405, 2561, 2590, 2730, 2758, 2886, 2955, 3367, 3885, 4137, 4810, 5122, 5910, 6734, 6895, 7215, 7289, 7683, 7770, 8274, 10101, 12805, 13790, 14430, 14578, 15366, 16835, 17927, 20202, 20685, 21867, 25610, 33670, 35854, 36445, 38415, 41370, 43734, 50505, 51023, 53781, 72890, 76830, 89635, 94757, 101010, 102046, 107562, 109335, 153069, 179270, 189514, 218670, 255115, 268905, 284271, 306138, 473785, 510230, 537810, 568542, 663299, 765345, 947570, 1326598, 1421355, 1530690, 1989897, 2842710, 3316495, 3979794, 6632990, 9949485, 19898970]

約数ペア:

[(1, 19898970), (2, 9949485), (3, 6632990), (5, 3979794), (6, 3316495), (7, 2842710), (10, 1989897), (13, 1530690), (14, 1421355), (15, 1326598), (21, 947570), (26, 765345), (30, 663299), (35, 568542), (37, 537810), (39, 510230), (42, 473785), (65, 306138), (70, 284271), (74, 268905), (78, 255115), (91, 218670), (105, 189514), (111, 179270), (130, 153069), (182, 109335), (185, 107562), (195, 102046), (197, 101010), (210, 94757), (222, 89635), (259, 76830), (273, 72890), (370, 53781), (390, 51023), (394, 50505), (455, 43734), (481, 41370), (518, 38415), (546, 36445), (555, 35854), (591, 33670), (777, 25610), (910, 21867), (962, 20685), (985, 20202), (1110, 17927), (1182, 16835), (1295, 15366), (1365, 14578), (1379, 14430), (1443, 13790), (1554, 12805), (1970, 10101), (2405, 8274), (2561, 7770), (2590, 7683), (2730, 7289), (2758, 7215), (2886, 6895), (2955, 6734), (3367, 5910), (3885, 5122), (4137, 4810)]