389989725

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:291

約数の個数: 96

約数和(自身を含む): 722334720

約数和(自身を除く): 332344995

約数列:

[1, 3, 5, 15, 19, 23, 25, 57, 69, 73, 75, 95, 115, 163, 219, 285, 345, 365, 437, 475, 489, 575, 815, 1095, 1311, 1387, 1425, 1679, 1725, 1825, 2185, 2445, 3097, 3749, 4075, 4161, 5037, 5475, 6555, 6935, 8395, 9291, 10925, 11247, 11899, 12225, 15485, 18745, 20805, 25185, 31901, 32775, 34675, 35697, 41975, 46455, 56235, 59495, 71231, 77425, 93725, 95703, 104025, 125925, 159505, 178485, 213693, 226081, 232275, 273677, 281175, 297475, 356155, 478515, 678243, 797525, 821031, 892425, 1068465, 1130405, 1368385, 1780775, 2392575, 3391215, 4105155, 5199863, 5342325, 5652025, 6841925, 15599589, 16956075, 20525775, 25999315, 77997945, 129996575, 389989725]

約数ペア:

[(1, 389989725), (3, 129996575), (5, 77997945), (15, 25999315), (19, 20525775), (23, 16956075), (25, 15599589), (57, 6841925), (69, 5652025), (73, 5342325), (75, 5199863), (95, 4105155), (115, 3391215), (163, 2392575), (219, 1780775), (285, 1368385), (345, 1130405), (365, 1068465), (437, 892425), (475, 821031), (489, 797525), (575, 678243), (815, 478515), (1095, 356155), (1311, 297475), (1387, 281175), (1425, 273677), (1679, 232275), (1725, 226081), (1825, 213693), (2185, 178485), (2445, 159505), (3097, 125925), (3749, 104025), (4075, 95703), (4161, 93725), (5037, 77425), (5475, 71231), (6555, 59495), (6935, 56235), (8395, 46455), (9291, 41975), (10925, 35697), (11247, 34675), (11899, 32775), (12225, 31901), (15485, 25185), (18745, 20805)]