21689850

素因数分解:

$2^1\times 3^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{227}}^1$

素因数の和:269

約数の個数: 144

約数和(自身を含む): 67683168

約数和(自身を除く): 45993318

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 25, 26, 30, 35, 39, 42, 49, 50, 65, 70, 75, 78, 91, 98, 105, 130, 147, 150, 175, 182, 195, 210, 227, 245, 273, 294, 325, 350, 390, 454, 455, 490, 525, 546, 637, 650, 681, 735, 910, 975, 1050, 1135, 1225, 1274, 1362, 1365, 1470, 1589, 1911, 1950, 2270, 2275, 2450, 2730, 2951, 3178, 3185, 3405, 3675, 3822, 4550, 4767, 5675, 5902, 6370, 6810, 6825, 7350, 7945, 8853, 9534, 9555, 11123, 11350, 13650, 14755, 15890, 15925, 17025, 17706, 19110, 20657, 22246, 23835, 29510, 31850, 33369, 34050, 39725, 41314, 44265, 47670, 47775, 55615, 61971, 66738, 73775, 79450, 88530, 95550, 103285, 111230, 119175, 123942, 144599, 147550, 166845, 206570, 221325, 238350, 278075, 289198, 309855, 333690, 433797, 442650, 516425, 556150, 619710, 722995, 834225, 867594, 1032850, 1445990, 1549275, 1668450, 2168985, 3098550, 3614975, 4337970, 7229950, 10844925, 21689850]

約数ペア:

[(1, 21689850), (2, 10844925), (3, 7229950), (5, 4337970), (6, 3614975), (7, 3098550), (10, 2168985), (13, 1668450), (14, 1549275), (15, 1445990), (21, 1032850), (25, 867594), (26, 834225), (30, 722995), (35, 619710), (39, 556150), (42, 516425), (49, 442650), (50, 433797), (65, 333690), (70, 309855), (75, 289198), (78, 278075), (91, 238350), (98, 221325), (105, 206570), (130, 166845), (147, 147550), (150, 144599), (175, 123942), (182, 119175), (195, 111230), (210, 103285), (227, 95550), (245, 88530), (273, 79450), (294, 73775), (325, 66738), (350, 61971), (390, 55615), (454, 47775), (455, 47670), (490, 44265), (525, 41314), (546, 39725), (637, 34050), (650, 33369), (681, 31850), (735, 29510), (910, 23835), (975, 22246), (1050, 20657), (1135, 19110), (1225, 17706), (1274, 17025), (1362, 15925), (1365, 15890), (1470, 14755), (1589, 13650), (1911, 11350), (1950, 11123), (2270, 9555), (2275, 9534), (2450, 8853), (2730, 7945), (2951, 7350), (3178, 6825), (3185, 6810), (3405, 6370), (3675, 5902), (3822, 5675), (4550, 4767)]