21510090

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{599}}^1$

素因数の和:641

約数の個数: 128

約数和(自身を含む): 69120000

約数和(自身を除く): 47609910

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 27, 30, 35, 38, 42, 45, 54, 57, 63, 70, 90, 95, 105, 114, 126, 133, 135, 171, 189, 190, 210, 266, 270, 285, 315, 342, 378, 399, 513, 570, 599, 630, 665, 798, 855, 945, 1026, 1197, 1198, 1330, 1710, 1797, 1890, 1995, 2394, 2565, 2995, 3591, 3594, 3990, 4193, 5130, 5391, 5985, 5990, 7182, 8386, 8985, 10782, 11381, 11970, 12579, 16173, 17955, 17970, 20965, 22762, 25158, 26955, 32346, 34143, 35910, 37737, 41930, 53910, 56905, 62895, 68286, 75474, 79667, 80865, 102429, 113211, 113810, 125790, 159334, 161730, 170715, 188685, 204858, 226422, 239001, 307287, 341430, 377370, 398335, 478002, 512145, 566055, 614574, 717003, 796670, 1024290, 1132110, 1195005, 1434006, 1536435, 2151009, 2390010, 3072870, 3585015, 4302018, 7170030, 10755045, 21510090]

約数ペア:

[(1, 21510090), (2, 10755045), (3, 7170030), (5, 4302018), (6, 3585015), (7, 3072870), (9, 2390010), (10, 2151009), (14, 1536435), (15, 1434006), (18, 1195005), (19, 1132110), (21, 1024290), (27, 796670), (30, 717003), (35, 614574), (38, 566055), (42, 512145), (45, 478002), (54, 398335), (57, 377370), (63, 341430), (70, 307287), (90, 239001), (95, 226422), (105, 204858), (114, 188685), (126, 170715), (133, 161730), (135, 159334), (171, 125790), (189, 113810), (190, 113211), (210, 102429), (266, 80865), (270, 79667), (285, 75474), (315, 68286), (342, 62895), (378, 56905), (399, 53910), (513, 41930), (570, 37737), (599, 35910), (630, 34143), (665, 32346), (798, 26955), (855, 25158), (945, 22762), (1026, 20965), (1197, 17970), (1198, 17955), (1330, 16173), (1710, 12579), (1797, 11970), (1890, 11381), (1995, 10782), (2394, 8985), (2565, 8386), (2995, 7182), (3591, 5990), (3594, 5985), (3990, 5391), (4193, 5130)]