394042240

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{19861}}^1$

素因数の和:19911

約数の個数: 64

約数和(自身を含む): 972443520

約数和(自身を除く): 578401280

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, 19840, 19861, 39722, 79444, 99305, 158888, 198610, 317776, 397220, 615691, 635552, 794440, 1231382, 1271104, 1588880, 2462764, 2542208, 3078455, 3177760, 4925528, 6156910, 6355520, 9851056, 12313820, 12711040, 19702112, 24627640, 39404224, 49255280, 78808448, 98510560, 197021120, 394042240]

約数ペア:

[(1, 394042240), (2, 197021120), (4, 98510560), (5, 78808448), (8, 49255280), (10, 39404224), (16, 24627640), (20, 19702112), (31, 12711040), (32, 12313820), (40, 9851056), (62, 6355520), (64, 6156910), (80, 4925528), (124, 3177760), (128, 3078455), (155, 2542208), (160, 2462764), (248, 1588880), (310, 1271104), (320, 1231382), (496, 794440), (620, 635552), (640, 615691), (992, 397220), (1240, 317776), (1984, 198610), (2480, 158888), (3968, 99305), (4960, 79444), (9920, 39722), (19840, 19861)]