21485750

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{601}}^1$

素因数の和:642

約数の個数: 64

約数和(自身を含む): 47331648

約数和(自身を除く): 25845898

約数列:

[1, 2, 5, 10, 11, 13, 22, 25, 26, 50, 55, 65, 110, 125, 130, 143, 250, 275, 286, 325, 550, 601, 650, 715, 1202, 1375, 1430, 1625, 2750, 3005, 3250, 3575, 6010, 6611, 7150, 7813, 13222, 15025, 15626, 17875, 30050, 33055, 35750, 39065, 66110, 75125, 78130, 85943, 150250, 165275, 171886, 195325, 330550, 390650, 429715, 826375, 859430, 976625, 1652750, 1953250, 2148575, 4297150, 10742875, 21485750]

約数ペア:

[(1, 21485750), (2, 10742875), (5, 4297150), (10, 2148575), (11, 1953250), (13, 1652750), (22, 976625), (25, 859430), (26, 826375), (50, 429715), (55, 390650), (65, 330550), (110, 195325), (125, 171886), (130, 165275), (143, 150250), (250, 85943), (275, 78130), (286, 75125), (325, 66110), (550, 39065), (601, 35750), (650, 33055), (715, 30050), (1202, 17875), (1375, 15626), (1430, 15025), (1625, 13222), (2750, 7813), (3005, 7150), (3250, 6611), (3575, 6010)]