28891380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:374

約数の個数: 144

約数和(自身を含む): 97445376

約数和(自身を除く): 68553996

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 210, 217, 245, 294, 310, 317, 372, 420, 434, 465, 490, 588, 620, 634, 651, 735, 868, 930, 951, 980, 1085, 1268, 1302, 1470, 1519, 1585, 1860, 1902, 2170, 2219, 2604, 2940, 3038, 3170, 3255, 3804, 4340, 4438, 4557, 4755, 6076, 6340, 6510, 6657, 7595, 8876, 9114, 9510, 9827, 11095, 13020, 13314, 15190, 15533, 18228, 19020, 19654, 22190, 22785, 26628, 29481, 30380, 31066, 33285, 39308, 44380, 45570, 46599, 49135, 58962, 62132, 66570, 68789, 77665, 91140, 93198, 98270, 117924, 133140, 137578, 147405, 155330, 186396, 196540, 206367, 232995, 275156, 294810, 310660, 343945, 412734, 465990, 481523, 589620, 687890, 825468, 931980, 963046, 1031835, 1375780, 1444569, 1926092, 2063670, 2407615, 2889138, 4127340, 4815230, 5778276, 7222845, 9630460, 14445690, 28891380]

約数ペア:

[(1, 28891380), (2, 14445690), (3, 9630460), (4, 7222845), (5, 5778276), (6, 4815230), (7, 4127340), (10, 2889138), (12, 2407615), (14, 2063670), (15, 1926092), (20, 1444569), (21, 1375780), (28, 1031835), (30, 963046), (31, 931980), (35, 825468), (42, 687890), (49, 589620), (60, 481523), (62, 465990), (70, 412734), (84, 343945), (93, 310660), (98, 294810), (105, 275156), (124, 232995), (140, 206367), (147, 196540), (155, 186396), (186, 155330), (196, 147405), (210, 137578), (217, 133140), (245, 117924), (294, 98270), (310, 93198), (317, 91140), (372, 77665), (420, 68789), (434, 66570), (465, 62132), (490, 58962), (588, 49135), (620, 46599), (634, 45570), (651, 44380), (735, 39308), (868, 33285), (930, 31066), (951, 30380), (980, 29481), (1085, 26628), (1268, 22785), (1302, 22190), (1470, 19654), (1519, 19020), (1585, 18228), (1860, 15533), (1902, 15190), (2170, 13314), (2219, 13020), (2604, 11095), (2940, 9827), (3038, 9510), (3170, 9114), (3255, 8876), (3804, 7595), (4340, 6657), (4438, 6510), (4557, 6340), (4755, 6076)]