21753550

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{683}}^1$

素因数の和:722

約数の個数: 72

約数和(自身を含む): 50762376

約数和(自身を除く): 29008826

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 49, 50, 65, 70, 91, 98, 130, 175, 182, 245, 325, 350, 455, 490, 637, 650, 683, 910, 1225, 1274, 1366, 2275, 2450, 3185, 3415, 4550, 4781, 6370, 6830, 8879, 9562, 15925, 17075, 17758, 23905, 31850, 33467, 34150, 44395, 47810, 62153, 66934, 88790, 119525, 124306, 167335, 221975, 239050, 310765, 334670, 435071, 443950, 621530, 836675, 870142, 1553825, 1673350, 2175355, 3107650, 4350710, 10876775, 21753550]

約数ペア:

[(1, 21753550), (2, 10876775), (5, 4350710), (7, 3107650), (10, 2175355), (13, 1673350), (14, 1553825), (25, 870142), (26, 836675), (35, 621530), (49, 443950), (50, 435071), (65, 334670), (70, 310765), (91, 239050), (98, 221975), (130, 167335), (175, 124306), (182, 119525), (245, 88790), (325, 66934), (350, 62153), (455, 47810), (490, 44395), (637, 34150), (650, 33467), (683, 31850), (910, 23905), (1225, 17758), (1274, 17075), (1366, 15925), (2275, 9562), (2450, 8879), (3185, 6830), (3415, 6370), (4550, 4781)]