18941988

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:181

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 31861212

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 29, 39, 52, 53, 58, 78, 79, 87, 106, 116, 156, 158, 159, 174, 212, 237, 316, 318, 348, 377, 474, 636, 689, 754, 948, 1027, 1131, 1378, 1508, 1537, 2054, 2067, 2262, 2291, 2756, 3074, 3081, 4108, 4134, 4187, 4524, 4582, 4611, 6148, 6162, 6873, 8268, 8374, 9164, 9222, 12324, 12561, 13746, 16748, 18444, 19981, 25122, 27492, 29783, 39962, 50244, 54431, 59566, 59943, 79924, 89349, 108862, 119132, 119886, 121423, 163293, 178698, 217724, 239772, 242846, 326586, 357396, 364269, 485692, 653172, 728538, 1457076, 1578499, 3156998, 4735497, 6313996, 9470994, 18941988]

約数ペア:

[(1, 18941988), (2, 9470994), (3, 6313996), (4, 4735497), (6, 3156998), (12, 1578499), (13, 1457076), (26, 728538), (29, 653172), (39, 485692), (52, 364269), (53, 357396), (58, 326586), (78, 242846), (79, 239772), (87, 217724), (106, 178698), (116, 163293), (156, 121423), (158, 119886), (159, 119132), (174, 108862), (212, 89349), (237, 79924), (316, 59943), (318, 59566), (348, 54431), (377, 50244), (474, 39962), (636, 29783), (689, 27492), (754, 25122), (948, 19981), (1027, 18444), (1131, 16748), (1378, 13746), (1508, 12561), (1537, 12324), (2054, 9222), (2067, 9164), (2262, 8374), (2291, 8268), (2756, 6873), (3074, 6162), (3081, 6148), (4108, 4611), (4134, 4582), (4187, 4524)]