21171120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5189}}^1$

素因数の和:5222

約数の個数: 80

約数和(自身を含む): 69504480

約数和(自身を除く): 48333360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 5189, 10378, 15567, 20756, 25945, 31134, 41512, 51890, 62268, 77835, 83024, 88213, 103780, 124536, 155670, 176426, 207560, 249072, 264639, 311340, 352852, 415120, 441065, 529278, 622680, 705704, 882130, 1058556, 1245360, 1323195, 1411408, 1764260, 2117112, 2646390, 3528520, 4234224, 5292780, 7057040, 10585560, 21171120]

約数ペア:

[(1, 21171120), (2, 10585560), (3, 7057040), (4, 5292780), (5, 4234224), (6, 3528520), (8, 2646390), (10, 2117112), (12, 1764260), (15, 1411408), (16, 1323195), (17, 1245360), (20, 1058556), (24, 882130), (30, 705704), (34, 622680), (40, 529278), (48, 441065), (51, 415120), (60, 352852), (68, 311340), (80, 264639), (85, 249072), (102, 207560), (120, 176426), (136, 155670), (170, 124536), (204, 103780), (240, 88213), (255, 83024), (272, 77835), (340, 62268), (408, 51890), (510, 41512), (680, 31134), (816, 25945), (1020, 20756), (1360, 15567), (2040, 10378), (4080, 5189)]