1990356.00000000

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^2$

素因数の和:384

約数の個数: 72

約数和(自身を含む): 105555996

約数和(自身を除く): 68068026

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 179, 195, 234, 358, 390, 537, 585, 895, 1074, 1170, 1611, 1790, 2327, 2685, 3222, 4654, 5370, 6981, 8055, 11635, 13962, 16110, 20943, 23270, 32041, 34905, 41886, 64082, 69810, 96123, 104715, 160205, 192246, 209430, 288369, 320410, 416533, 480615, 576738, 833066, 961230, 1249599, 1441845, 2082665, 2499198, 2883690, 3748797, 4165330, 6247995, 7497594, 12495990, 18743985, 37487970]

約数ペア:

[(1, 37487970), (2, 18743985), (3, 12495990), (5, 7497594), (6, 6247995), (9, 4165330), (10, 3748797), (13, 2883690), (15, 2499198), (18, 2082665), (26, 1441845), (30, 1249599), (39, 961230), (45, 833066), (65, 576738), (78, 480615), (90, 416533), (117, 320410), (130, 288369), (179, 209430), (195, 192246), (234, 160205), (358, 104715), (390, 96123), (537, 69810), (585, 64082), (895, 41886), (1074, 34905), (1170, 32041), (1611, 23270), (1790, 20943), (2327, 16110), (2685, 13962), (3222, 11635), (4654, 8055), (5370, 6981)]