84478720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2129}}^1$

素因数の和:2181

約数の個数: 72

約数和(自身を含む): 208978560

約数和(自身を除く): 124499840

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, 2129, 2480, 3968, 4258, 4960, 7936, 8516, 9920, 10645, 17032, 19840, 21290, 34064, 39680, 42580, 65999, 68128, 85160, 131998, 136256, 170320, 263996, 272512, 329995, 340640, 527992, 545024, 659990, 681280, 1055984, 1319980, 1362560, 2111968, 2639960, 2725120, 4223936, 5279920, 8447872, 10559840, 16895744, 21119680, 42239360, 84478720]

約数ペア:

[(1, 84478720), (2, 42239360), (4, 21119680), (5, 16895744), (8, 10559840), (10, 8447872), (16, 5279920), (20, 4223936), (31, 2725120), (32, 2639960), (40, 2111968), (62, 1362560), (64, 1319980), (80, 1055984), (124, 681280), (128, 659990), (155, 545024), (160, 527992), (248, 340640), (256, 329995), (310, 272512), (320, 263996), (496, 170320), (620, 136256), (640, 131998), (992, 85160), (1240, 68128), (1280, 65999), (1984, 42580), (2129, 39680), (2480, 34064), (3968, 21290), (4258, 19840), (4960, 17032), (7936, 10645), (8516, 9920)]