21152160

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:455

約数の個数: 144

約数和(自身を含む): 74319336

約数和(自身を除く): 53167176

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 37, 40, 45, 48, 60, 72, 74, 80, 90, 96, 111, 120, 144, 148, 160, 180, 185, 222, 240, 288, 296, 333, 360, 370, 397, 444, 480, 555, 592, 666, 720, 740, 794, 888, 1110, 1184, 1191, 1332, 1440, 1480, 1588, 1665, 1776, 1985, 2220, 2382, 2664, 2960, 3176, 3330, 3552, 3573, 3970, 4440, 4764, 5328, 5920, 5955, 6352, 6660, 7146, 7940, 8880, 9528, 10656, 11910, 12704, 13320, 14292, 14689, 15880, 17760, 17865, 19056, 23820, 26640, 28584, 29378, 31760, 35730, 38112, 44067, 47640, 53280, 57168, 58756, 63520, 71460, 73445, 88134, 95280, 114336, 117512, 132201, 142920, 146890, 176268, 190560, 220335, 235024, 264402, 285840, 293780, 352536, 440670, 470048, 528804, 571680, 587560, 661005, 705072, 881340, 1057608, 1175120, 1322010, 1410144, 1762680, 2115216, 2350240, 2644020, 3525360, 4230432, 5288040, 7050720, 10576080, 21152160]

約数ペア:

[(1, 21152160), (2, 10576080), (3, 7050720), (4, 5288040), (5, 4230432), (6, 3525360), (8, 2644020), (9, 2350240), (10, 2115216), (12, 1762680), (15, 1410144), (16, 1322010), (18, 1175120), (20, 1057608), (24, 881340), (30, 705072), (32, 661005), (36, 587560), (37, 571680), (40, 528804), (45, 470048), (48, 440670), (60, 352536), (72, 293780), (74, 285840), (80, 264402), (90, 235024), (96, 220335), (111, 190560), (120, 176268), (144, 146890), (148, 142920), (160, 132201), (180, 117512), (185, 114336), (222, 95280), (240, 88134), (288, 73445), (296, 71460), (333, 63520), (360, 58756), (370, 57168), (397, 53280), (444, 47640), (480, 44067), (555, 38112), (592, 35730), (666, 31760), (720, 29378), (740, 28584), (794, 26640), (888, 23820), (1110, 19056), (1184, 17865), (1191, 17760), (1332, 15880), (1440, 14689), (1480, 14292), (1588, 13320), (1665, 12704), (1776, 11910), (1985, 10656), (2220, 9528), (2382, 8880), (2664, 7940), (2960, 7146), (3176, 6660), (3330, 6352), (3552, 5955), (3573, 5920), (3970, 5328), (4440, 4764)]