21315450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{643}}^1$

素因数の和:688

約数の個数: 96

約数和(自身を含む): 60371136

約数和(自身を除く): 39055686

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 25, 26, 30, 34, 39, 50, 51, 65, 75, 78, 85, 102, 130, 150, 170, 195, 221, 255, 325, 390, 425, 442, 510, 643, 650, 663, 850, 975, 1105, 1275, 1286, 1326, 1929, 1950, 2210, 2550, 3215, 3315, 3858, 5525, 6430, 6630, 8359, 9645, 10931, 11050, 16075, 16575, 16718, 19290, 21862, 25077, 32150, 32793, 33150, 41795, 48225, 50154, 54655, 65586, 83590, 96450, 109310, 125385, 142103, 163965, 208975, 250770, 273275, 284206, 327930, 417950, 426309, 546550, 626925, 710515, 819825, 852618, 1253850, 1421030, 1639650, 2131545, 3552575, 4263090, 7105150, 10657725, 21315450]

約数ペア:

[(1, 21315450), (2, 10657725), (3, 7105150), (5, 4263090), (6, 3552575), (10, 2131545), (13, 1639650), (15, 1421030), (17, 1253850), (25, 852618), (26, 819825), (30, 710515), (34, 626925), (39, 546550), (50, 426309), (51, 417950), (65, 327930), (75, 284206), (78, 273275), (85, 250770), (102, 208975), (130, 163965), (150, 142103), (170, 125385), (195, 109310), (221, 96450), (255, 83590), (325, 65586), (390, 54655), (425, 50154), (442, 48225), (510, 41795), (643, 33150), (650, 32793), (663, 32150), (850, 25077), (975, 21862), (1105, 19290), (1275, 16718), (1286, 16575), (1326, 16075), (1929, 11050), (1950, 10931), (2210, 9645), (2550, 8359), (3215, 6630), (3315, 6430), (3858, 5525)]