21249660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{251}}^1$

素因数の和:363

約数の個数: 96

約数和(自身を含む): 64012032

約数和(自身を除く): 42762372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 83, 85, 102, 166, 170, 204, 249, 251, 255, 332, 340, 415, 498, 502, 510, 753, 830, 996, 1004, 1020, 1245, 1255, 1411, 1506, 1660, 2490, 2510, 2822, 3012, 3765, 4233, 4267, 4980, 5020, 5644, 7055, 7530, 8466, 8534, 12801, 14110, 15060, 16932, 17068, 20833, 21165, 21335, 25602, 28220, 41666, 42330, 42670, 51204, 62499, 64005, 83332, 84660, 85340, 104165, 124998, 128010, 208330, 249996, 256020, 312495, 354161, 416660, 624990, 708322, 1062483, 1249980, 1416644, 1770805, 2124966, 3541610, 4249932, 5312415, 7083220, 10624830, 21249660]

約数ペア:

[(1, 21249660), (2, 10624830), (3, 7083220), (4, 5312415), (5, 4249932), (6, 3541610), (10, 2124966), (12, 1770805), (15, 1416644), (17, 1249980), (20, 1062483), (30, 708322), (34, 624990), (51, 416660), (60, 354161), (68, 312495), (83, 256020), (85, 249996), (102, 208330), (166, 128010), (170, 124998), (204, 104165), (249, 85340), (251, 84660), (255, 83332), (332, 64005), (340, 62499), (415, 51204), (498, 42670), (502, 42330), (510, 41666), (753, 28220), (830, 25602), (996, 21335), (1004, 21165), (1020, 20833), (1245, 17068), (1255, 16932), (1411, 15060), (1506, 14110), (1660, 12801), (2490, 8534), (2510, 8466), (2822, 7530), (3012, 7055), (3765, 5644), (4233, 5020), (4267, 4980)]