19895920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{983}}^1$

素因数の和:1030

約数の個数: 80

約数和(自身を含む): 52710912

約数和(自身を除く): 32814992

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 55, 80, 88, 92, 110, 115, 176, 184, 220, 230, 253, 368, 440, 460, 506, 880, 920, 983, 1012, 1265, 1840, 1966, 2024, 2530, 3932, 4048, 4915, 5060, 7864, 9830, 10120, 10813, 15728, 19660, 20240, 21626, 22609, 39320, 43252, 45218, 54065, 78640, 86504, 90436, 108130, 113045, 173008, 180872, 216260, 226090, 248699, 361744, 432520, 452180, 497398, 865040, 904360, 994796, 1243495, 1808720, 1989592, 2486990, 3979184, 4973980, 9947960, 19895920]

約数ペア:

[(1, 19895920), (2, 9947960), (4, 4973980), (5, 3979184), (8, 2486990), (10, 1989592), (11, 1808720), (16, 1243495), (20, 994796), (22, 904360), (23, 865040), (40, 497398), (44, 452180), (46, 432520), (55, 361744), (80, 248699), (88, 226090), (92, 216260), (110, 180872), (115, 173008), (176, 113045), (184, 108130), (220, 90436), (230, 86504), (253, 78640), (368, 54065), (440, 45218), (460, 43252), (506, 39320), (880, 22609), (920, 21626), (983, 20240), (1012, 19660), (1265, 15728), (1840, 10813), (1966, 10120), (2024, 9830), (2530, 7864), (3932, 5060), (4048, 4915)]