21495960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 144

約数和(自身を含む): 73373040

約数和(自身を除く): 51877080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 29, 30, 36, 40, 45, 58, 60, 71, 72, 87, 90, 116, 120, 142, 145, 174, 180, 213, 232, 261, 284, 290, 348, 355, 360, 426, 435, 522, 568, 580, 639, 696, 710, 841, 852, 870, 1044, 1065, 1160, 1278, 1305, 1420, 1682, 1704, 1740, 2059, 2088, 2130, 2523, 2556, 2610, 2840, 3195, 3364, 3480, 4118, 4205, 4260, 5046, 5112, 5220, 6177, 6390, 6728, 7569, 8236, 8410, 8520, 10092, 10295, 10440, 12354, 12615, 12780, 15138, 16472, 16820, 18531, 20184, 20590, 24708, 25230, 25560, 30276, 30885, 33640, 37062, 37845, 41180, 49416, 50460, 59711, 60552, 61770, 74124, 75690, 82360, 92655, 100920, 119422, 123540, 148248, 151380, 179133, 185310, 238844, 247080, 298555, 302760, 358266, 370620, 477688, 537399, 597110, 716532, 741240, 895665, 1074798, 1194220, 1433064, 1791330, 2149596, 2388440, 2686995, 3582660, 4299192, 5373990, 7165320, 10747980, 21495960]

約数ペア:

[(1, 21495960), (2, 10747980), (3, 7165320), (4, 5373990), (5, 4299192), (6, 3582660), (8, 2686995), (9, 2388440), (10, 2149596), (12, 1791330), (15, 1433064), (18, 1194220), (20, 1074798), (24, 895665), (29, 741240), (30, 716532), (36, 597110), (40, 537399), (45, 477688), (58, 370620), (60, 358266), (71, 302760), (72, 298555), (87, 247080), (90, 238844), (116, 185310), (120, 179133), (142, 151380), (145, 148248), (174, 123540), (180, 119422), (213, 100920), (232, 92655), (261, 82360), (284, 75690), (290, 74124), (348, 61770), (355, 60552), (360, 59711), (426, 50460), (435, 49416), (522, 41180), (568, 37845), (580, 37062), (639, 33640), (696, 30885), (710, 30276), (841, 25560), (852, 25230), (870, 24708), (1044, 20590), (1065, 20184), (1160, 18531), (1278, 16820), (1305, 16472), (1420, 15138), (1682, 12780), (1704, 12615), (1740, 12354), (2059, 10440), (2088, 10295), (2130, 10092), (2523, 8520), (2556, 8410), (2610, 8236), (2840, 7569), (3195, 6728), (3364, 6390), (3480, 6177), (4118, 5220), (4205, 5112), (4260, 5046)]