21239640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1439}}^1$

素因数の和:1497

約数の個数: 96

約数和(自身を含む): 70761600

約数和(自身を除く): 49521960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 41, 45, 60, 72, 82, 90, 120, 123, 164, 180, 205, 246, 328, 360, 369, 410, 492, 615, 738, 820, 984, 1230, 1439, 1476, 1640, 1845, 2460, 2878, 2952, 3690, 4317, 4920, 5756, 7195, 7380, 8634, 11512, 12951, 14390, 14760, 17268, 21585, 25902, 28780, 34536, 43170, 51804, 57560, 58999, 64755, 86340, 103608, 117998, 129510, 172680, 176997, 235996, 259020, 294995, 353994, 471992, 518040, 530991, 589990, 707988, 884985, 1061982, 1179980, 1415976, 1769970, 2123964, 2359960, 2654955, 3539940, 4247928, 5309910, 7079880, 10619820, 21239640]

約数ペア:

[(1, 21239640), (2, 10619820), (3, 7079880), (4, 5309910), (5, 4247928), (6, 3539940), (8, 2654955), (9, 2359960), (10, 2123964), (12, 1769970), (15, 1415976), (18, 1179980), (20, 1061982), (24, 884985), (30, 707988), (36, 589990), (40, 530991), (41, 518040), (45, 471992), (60, 353994), (72, 294995), (82, 259020), (90, 235996), (120, 176997), (123, 172680), (164, 129510), (180, 117998), (205, 103608), (246, 86340), (328, 64755), (360, 58999), (369, 57560), (410, 51804), (492, 43170), (615, 34536), (738, 28780), (820, 25902), (984, 21585), (1230, 17268), (1439, 14760), (1476, 14390), (1640, 12951), (1845, 11512), (2460, 8634), (2878, 7380), (2952, 7195), (3690, 5756), (4317, 4920)]