989820

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1$

素因数の和:81

約数の個数: 120

約数和(自身を含む): 3415104

約数和(自身を除く): 2425284

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 47, 52, 54, 60, 65, 78, 81, 90, 94, 108, 117, 130, 135, 141, 156, 162, 180, 188, 195, 234, 235, 260, 270, 282, 324, 351, 390, 405, 423, 468, 470, 540, 564, 585, 611, 702, 705, 780, 810, 846, 940, 1053, 1170, 1222, 1269, 1404, 1410, 1620, 1692, 1755, 1833, 2106, 2115, 2340, 2444, 2538, 2820, 3055, 3510, 3666, 3807, 4212, 4230, 5076, 5265, 5499, 6110, 6345, 7020, 7332, 7614, 8460, 9165, 10530, 10998, 12220, 12690, 15228, 16497, 18330, 19035, 21060, 21996, 25380, 27495, 32994, 36660, 38070, 49491, 54990, 65988, 76140, 82485, 98982, 109980, 164970, 197964, 247455, 329940, 494910, 989820]

約数ペア:

[(1, 989820), (2, 494910), (3, 329940), (4, 247455), (5, 197964), (6, 164970), (9, 109980), (10, 98982), (12, 82485), (13, 76140), (15, 65988), (18, 54990), (20, 49491), (26, 38070), (27, 36660), (30, 32994), (36, 27495), (39, 25380), (45, 21996), (47, 21060), (52, 19035), (54, 18330), (60, 16497), (65, 15228), (78, 12690), (81, 12220), (90, 10998), (94, 10530), (108, 9165), (117, 8460), (130, 7614), (135, 7332), (141, 7020), (156, 6345), (162, 6110), (180, 5499), (188, 5265), (195, 5076), (234, 4230), (235, 4212), (260, 3807), (270, 3666), (282, 3510), (324, 3055), (351, 2820), (390, 2538), (405, 2444), (423, 2340), (468, 2115), (470, 2106), (540, 1833), (564, 1755), (585, 1692), (611, 1620), (702, 1410), (705, 1404), (780, 1269), (810, 1222), (846, 1170), (940, 1053)]