20113040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1$

素因数の和:696

約数の個数: 80

約数和(自身を含む): 51746688

約数和(自身を除く): 31633648

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 643, 680, 782, 920, 1286, 1360, 1564, 1840, 1955, 2572, 3128, 3215, 3910, 5144, 6256, 6430, 7820, 10288, 10931, 12860, 14789, 15640, 21862, 25720, 29578, 31280, 43724, 51440, 54655, 59156, 73945, 87448, 109310, 118312, 147890, 174896, 218620, 236624, 251413, 295780, 437240, 502826, 591560, 874480, 1005652, 1183120, 1257065, 2011304, 2514130, 4022608, 5028260, 10056520, 20113040]

約数ペア:

[(1, 20113040), (2, 10056520), (4, 5028260), (5, 4022608), (8, 2514130), (10, 2011304), (16, 1257065), (17, 1183120), (20, 1005652), (23, 874480), (34, 591560), (40, 502826), (46, 437240), (68, 295780), (80, 251413), (85, 236624), (92, 218620), (115, 174896), (136, 147890), (170, 118312), (184, 109310), (230, 87448), (272, 73945), (340, 59156), (368, 54655), (391, 51440), (460, 43724), (643, 31280), (680, 29578), (782, 25720), (920, 21862), (1286, 15640), (1360, 14789), (1564, 12860), (1840, 10931), (1955, 10288), (2572, 7820), (3128, 6430), (3215, 6256), (3910, 5144)]