81498440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 188559360

約数和(自身を除く): 107060920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 127, 244, 254, 263, 305, 488, 508, 526, 610, 635, 1016, 1052, 1220, 1270, 1315, 2104, 2440, 2540, 2630, 5080, 5260, 7747, 10520, 15494, 16043, 30988, 32086, 33401, 38735, 61976, 64172, 66802, 77470, 80215, 128344, 133604, 154940, 160430, 167005, 267208, 309880, 320860, 334010, 641720, 668020, 1336040, 2037461, 4074922, 8149844, 10187305, 16299688, 20374610, 40749220, 81498440]

約数ペア:

[(1, 81498440), (2, 40749220), (4, 20374610), (5, 16299688), (8, 10187305), (10, 8149844), (20, 4074922), (40, 2037461), (61, 1336040), (122, 668020), (127, 641720), (244, 334010), (254, 320860), (263, 309880), (305, 267208), (488, 167005), (508, 160430), (526, 154940), (610, 133604), (635, 128344), (1016, 80215), (1052, 77470), (1220, 66802), (1270, 64172), (1315, 61976), (2104, 38735), (2440, 33401), (2540, 32086), (2630, 30988), (5080, 16043), (5260, 15494), (7747, 10520)]