1619697920

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{40819}}^1$

素因数の和:40871

約数の個数: 72

約数和(自身を含む): 4004931840

約数和(自身を除く): 2385233920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 19840, 39680, 40819, 81638, 163276, 204095, 326552, 408190, 653104, 816380, 1265389, 1306208, 1632760, 2530778, 2612416, 3265520, 5061556, 5224832, 6326945, 6531040, 10123112, 10449664, 12653890, 13062080, 20246224, 25307780, 26124160, 40492448, 50615560, 52248320, 80984896, 101231120, 161969792, 202462240, 323939584, 404924480, 809848960, 1619697920]

約数ペア:

[(1, 1619697920), (2, 809848960), (4, 404924480), (5, 323939584), (8, 202462240), (10, 161969792), (16, 101231120), (20, 80984896), (31, 52248320), (32, 50615560), (40, 40492448), (62, 26124160), (64, 25307780), (80, 20246224), (124, 13062080), (128, 12653890), (155, 10449664), (160, 10123112), (248, 6531040), (256, 6326945), (310, 5224832), (320, 5061556), (496, 3265520), (620, 2612416), (640, 2530778), (992, 1632760), (1240, 1306208), (1280, 1265389), (1984, 816380), (2480, 653104), (3968, 408190), (4960, 326552), (7936, 204095), (9920, 163276), (19840, 81638), (39680, 40819)]