21001656

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{811}}^1$

素因数の和:916

約数の個数: 64

約数和(自身を含む): 57294720

約数和(自身を除く): 36293064

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 83, 104, 156, 166, 249, 312, 332, 498, 664, 811, 996, 1079, 1622, 1992, 2158, 2433, 3237, 3244, 4316, 4866, 6474, 6488, 8632, 9732, 10543, 12948, 19464, 21086, 25896, 31629, 42172, 63258, 67313, 84344, 126516, 134626, 201939, 253032, 269252, 403878, 538504, 807756, 875069, 1615512, 1750138, 2625207, 3500276, 5250414, 7000552, 10500828, 21001656]

約数ペア:

[(1, 21001656), (2, 10500828), (3, 7000552), (4, 5250414), (6, 3500276), (8, 2625207), (12, 1750138), (13, 1615512), (24, 875069), (26, 807756), (39, 538504), (52, 403878), (78, 269252), (83, 253032), (104, 201939), (156, 134626), (166, 126516), (249, 84344), (312, 67313), (332, 63258), (498, 42172), (664, 31629), (811, 25896), (996, 21086), (1079, 19464), (1622, 12948), (1992, 10543), (2158, 9732), (2433, 8632), (3237, 6488), (3244, 6474), (4316, 4866)]