387495040

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{19531}}^1$

素因数の和:19581

約数の個数: 64

約数和(自身を含む): 956286720

約数和(自身を除く): 568791680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 19531, 19840, 39062, 78124, 97655, 156248, 195310, 312496, 390620, 605461, 624992, 781240, 1210922, 1249984, 1562480, 2421844, 2499968, 3027305, 3124960, 4843688, 6054610, 6249920, 9687376, 12109220, 12499840, 19374752, 24218440, 38749504, 48436880, 77499008, 96873760, 193747520, 387495040]

約数ペア:

[(1, 387495040), (2, 193747520), (4, 96873760), (5, 77499008), (8, 48436880), (10, 38749504), (16, 24218440), (20, 19374752), (31, 12499840), (32, 12109220), (40, 9687376), (62, 6249920), (64, 6054610), (80, 4843688), (124, 3124960), (128, 3027305), (155, 2499968), (160, 2421844), (248, 1562480), (310, 1249984), (320, 1210922), (496, 781240), (620, 624992), (640, 605461), (992, 390620), (1240, 312496), (1984, 195310), (2480, 156248), (3968, 97655), (4960, 78124), (9920, 39062), (19531, 19840)]