21808410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{281}}^1$

素因数の和:503

約数の個数: 64

約数和(自身を含む): 56851200

約数和(自身を除く): 35042790

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 199, 281, 390, 398, 562, 597, 843, 995, 1194, 1405, 1686, 1990, 2587, 2810, 2985, 3653, 4215, 5174, 5970, 7306, 7761, 8430, 10959, 12935, 15522, 18265, 21918, 25870, 36530, 38805, 54795, 55919, 77610, 109590, 111838, 167757, 279595, 335514, 559190, 726947, 838785, 1453894, 1677570, 2180841, 3634735, 4361682, 7269470, 10904205, 21808410]

約数ペア:

[(1, 21808410), (2, 10904205), (3, 7269470), (5, 4361682), (6, 3634735), (10, 2180841), (13, 1677570), (15, 1453894), (26, 838785), (30, 726947), (39, 559190), (65, 335514), (78, 279595), (130, 167757), (195, 111838), (199, 109590), (281, 77610), (390, 55919), (398, 54795), (562, 38805), (597, 36530), (843, 25870), (995, 21918), (1194, 18265), (1405, 15522), (1686, 12935), (1990, 10959), (2587, 8430), (2810, 7761), (2985, 7306), (3653, 5970), (4215, 5174)]