40665040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{641}}^1$

素因数の和:728

約数の個数: 80

約数和(自身を含む): 103649616

約数和(自身を除く): 62984576

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 61, 65, 80, 104, 122, 130, 208, 244, 260, 305, 488, 520, 610, 641, 793, 976, 1040, 1220, 1282, 1586, 2440, 2564, 3172, 3205, 3965, 4880, 5128, 6344, 6410, 7930, 8333, 10256, 12688, 12820, 15860, 16666, 25640, 31720, 33332, 39101, 41665, 51280, 63440, 66664, 78202, 83330, 133328, 156404, 166660, 195505, 312808, 333320, 391010, 508313, 625616, 666640, 782020, 1016626, 1564040, 2033252, 2541565, 3128080, 4066504, 5083130, 8133008, 10166260, 20332520, 40665040]

約数ペア:

[(1, 40665040), (2, 20332520), (4, 10166260), (5, 8133008), (8, 5083130), (10, 4066504), (13, 3128080), (16, 2541565), (20, 2033252), (26, 1564040), (40, 1016626), (52, 782020), (61, 666640), (65, 625616), (80, 508313), (104, 391010), (122, 333320), (130, 312808), (208, 195505), (244, 166660), (260, 156404), (305, 133328), (488, 83330), (520, 78202), (610, 66664), (641, 63440), (793, 51280), (976, 41665), (1040, 39101), (1220, 33332), (1282, 31720), (1586, 25640), (2440, 16666), (2564, 15860), (3172, 12820), (3205, 12688), (3965, 10256), (4880, 8333), (5128, 7930), (6344, 6410)]