21220080

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{743}}^1$

素因数の和:783

約数の個数: 160

約数和(自身を含む): 79709184

約数和(自身を除く): 58489104

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 48, 51, 56, 60, 68, 70, 80, 84, 85, 102, 105, 112, 119, 120, 136, 140, 168, 170, 204, 210, 238, 240, 255, 272, 280, 336, 340, 357, 408, 420, 476, 510, 560, 595, 680, 714, 743, 816, 840, 952, 1020, 1190, 1360, 1428, 1486, 1680, 1785, 1904, 2040, 2229, 2380, 2856, 2972, 3570, 3715, 4080, 4458, 4760, 5201, 5712, 5944, 7140, 7430, 8916, 9520, 10402, 11145, 11888, 12631, 14280, 14860, 15603, 17832, 20804, 22290, 25262, 26005, 28560, 29720, 31206, 35664, 37893, 41608, 44580, 50524, 52010, 59440, 62412, 63155, 75786, 78015, 83216, 88417, 89160, 101048, 104020, 124824, 126310, 151572, 156030, 176834, 178320, 189465, 202096, 208040, 249648, 252620, 265251, 303144, 312060, 353668, 378930, 416080, 442085, 505240, 530502, 606288, 624120, 707336, 757860, 884170, 1010480, 1061004, 1248240, 1326255, 1414672, 1515720, 1768340, 2122008, 2652510, 3031440, 3536680, 4244016, 5305020, 7073360, 10610040, 21220080]

約数ペア:

[(1, 21220080), (2, 10610040), (3, 7073360), (4, 5305020), (5, 4244016), (6, 3536680), (7, 3031440), (8, 2652510), (10, 2122008), (12, 1768340), (14, 1515720), (15, 1414672), (16, 1326255), (17, 1248240), (20, 1061004), (21, 1010480), (24, 884170), (28, 757860), (30, 707336), (34, 624120), (35, 606288), (40, 530502), (42, 505240), (48, 442085), (51, 416080), (56, 378930), (60, 353668), (68, 312060), (70, 303144), (80, 265251), (84, 252620), (85, 249648), (102, 208040), (105, 202096), (112, 189465), (119, 178320), (120, 176834), (136, 156030), (140, 151572), (168, 126310), (170, 124824), (204, 104020), (210, 101048), (238, 89160), (240, 88417), (255, 83216), (272, 78015), (280, 75786), (336, 63155), (340, 62412), (357, 59440), (408, 52010), (420, 50524), (476, 44580), (510, 41608), (560, 37893), (595, 35664), (680, 31206), (714, 29720), (743, 28560), (816, 26005), (840, 25262), (952, 22290), (1020, 20804), (1190, 17832), (1360, 15603), (1428, 14860), (1486, 14280), (1680, 12631), (1785, 11888), (1904, 11145), (2040, 10402), (2229, 9520), (2380, 8916), (2856, 7430), (2972, 7140), (3570, 5944), (3715, 5712), (4080, 5201), (4458, 4760)]