21000902528

素因数分解:

$2^7\times {\mathrm{101}}^1\times {\mathrm{401}}^1\times {\mathrm{4051}}^1$

素因数の和:4567

約数の個数: 64

約数和(自身を含む): 42367793040

約数和(自身を除く): 21366890512

約数列:

[1, 2, 4, 8, 16, 32, 64, 101, 128, 202, 401, 404, 802, 808, 1604, 1616, 3208, 3232, 4051, 6416, 6464, 8102, 12832, 12928, 16204, 25664, 32408, 40501, 51328, 64816, 81002, 129632, 162004, 259264, 324008, 409151, 518528, 648016, 818302, 1296032, 1624451, 1636604, 2592064, 3248902, 3273208, 5184128, 6497804, 6546416, 12995608, 13092832, 25991216, 26185664, 51982432, 52371328, 103964864, 164069551, 207929728, 328139102, 656278204, 1312556408, 2625112816, 5250225632, 10500451264, 21000902528]

約数ペア:

[(1, 21000902528), (2, 10500451264), (4, 5250225632), (8, 2625112816), (16, 1312556408), (32, 656278204), (64, 328139102), (101, 207929728), (128, 164069551), (202, 103964864), (401, 52371328), (404, 51982432), (802, 26185664), (808, 25991216), (1604, 13092832), (1616, 12995608), (3208, 6546416), (3232, 6497804), (4051, 5184128), (6416, 3273208), (6464, 3248902), (8102, 2592064), (12832, 1636604), (12928, 1624451), (16204, 1296032), (25664, 818302), (32408, 648016), (40501, 518528), (51328, 409151), (64816, 324008), (81002, 259264), (129632, 162004)]