20729160

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{811}}^1$

素因数の和:899

約数の個数: 96

約数和(自身を含む): 68402880

約数和(自身を除く): 47673720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 71, 72, 90, 120, 142, 180, 213, 284, 355, 360, 426, 568, 639, 710, 811, 852, 1065, 1278, 1420, 1622, 1704, 2130, 2433, 2556, 2840, 3195, 3244, 4055, 4260, 4866, 5112, 6390, 6488, 7299, 8110, 8520, 9732, 12165, 12780, 14598, 16220, 19464, 24330, 25560, 29196, 32440, 36495, 48660, 57581, 58392, 72990, 97320, 115162, 145980, 172743, 230324, 287905, 291960, 345486, 460648, 518229, 575810, 690972, 863715, 1036458, 1151620, 1381944, 1727430, 2072916, 2303240, 2591145, 3454860, 4145832, 5182290, 6909720, 10364580, 20729160]

約数ペア:

[(1, 20729160), (2, 10364580), (3, 6909720), (4, 5182290), (5, 4145832), (6, 3454860), (8, 2591145), (9, 2303240), (10, 2072916), (12, 1727430), (15, 1381944), (18, 1151620), (20, 1036458), (24, 863715), (30, 690972), (36, 575810), (40, 518229), (45, 460648), (60, 345486), (71, 291960), (72, 287905), (90, 230324), (120, 172743), (142, 145980), (180, 115162), (213, 97320), (284, 72990), (355, 58392), (360, 57581), (426, 48660), (568, 36495), (639, 32440), (710, 29196), (811, 25560), (852, 24330), (1065, 19464), (1278, 16220), (1420, 14598), (1622, 12780), (1704, 12165), (2130, 9732), (2433, 8520), (2556, 8110), (2840, 7299), (3195, 6488), (3244, 6390), (4055, 5112), (4260, 4866)]