20751240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:199

約数の個数: 128

約数和(自身を含む): 66096000

約数和(自身を除く): 45344760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 67, 87, 89, 116, 120, 134, 145, 174, 178, 201, 232, 267, 268, 290, 335, 348, 356, 402, 435, 445, 534, 536, 580, 670, 696, 712, 804, 870, 890, 1005, 1068, 1160, 1335, 1340, 1608, 1740, 1780, 1943, 2010, 2136, 2581, 2670, 2680, 3480, 3560, 3886, 4020, 5162, 5340, 5829, 5963, 7743, 7772, 8040, 9715, 10324, 10680, 11658, 11926, 12905, 15486, 15544, 17889, 19430, 20648, 23316, 23852, 25810, 29145, 29815, 30972, 35778, 38715, 38860, 46632, 47704, 51620, 58290, 59630, 61944, 71556, 77430, 77720, 89445, 103240, 116580, 119260, 143112, 154860, 172927, 178890, 233160, 238520, 309720, 345854, 357780, 518781, 691708, 715560, 864635, 1037562, 1383416, 1729270, 2075124, 2593905, 3458540, 4150248, 5187810, 6917080, 10375620, 20751240]

約数ペア:

[(1, 20751240), (2, 10375620), (3, 6917080), (4, 5187810), (5, 4150248), (6, 3458540), (8, 2593905), (10, 2075124), (12, 1729270), (15, 1383416), (20, 1037562), (24, 864635), (29, 715560), (30, 691708), (40, 518781), (58, 357780), (60, 345854), (67, 309720), (87, 238520), (89, 233160), (116, 178890), (120, 172927), (134, 154860), (145, 143112), (174, 119260), (178, 116580), (201, 103240), (232, 89445), (267, 77720), (268, 77430), (290, 71556), (335, 61944), (348, 59630), (356, 58290), (402, 51620), (435, 47704), (445, 46632), (534, 38860), (536, 38715), (580, 35778), (670, 30972), (696, 29815), (712, 29145), (804, 25810), (870, 23852), (890, 23316), (1005, 20648), (1068, 19430), (1160, 17889), (1335, 15544), (1340, 15486), (1608, 12905), (1740, 11926), (1780, 11658), (1943, 10680), (2010, 10324), (2136, 9715), (2581, 8040), (2670, 7772), (2680, 7743), (3480, 5963), (3560, 5829), (3886, 5340), (4020, 5162)]