813441280

素因数分解:

$2^8\times 5^1\times {\mathrm{239}}^1\times {\mathrm{2659}}^1$

素因数の和:2919

約数の個数: 72

約数和(自身を含む): 1957334400

約数和(自身を除く): 1143893120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 239, 256, 320, 478, 640, 956, 1195, 1280, 1912, 2390, 2659, 3824, 4780, 5318, 7648, 9560, 10636, 13295, 15296, 19120, 21272, 26590, 30592, 38240, 42544, 53180, 61184, 76480, 85088, 106360, 152960, 170176, 212720, 305920, 340352, 425440, 635501, 680704, 850880, 1271002, 1701760, 2542004, 3177505, 3403520, 5084008, 6355010, 10168016, 12710020, 20336032, 25420040, 40672064, 50840080, 81344128, 101680160, 162688256, 203360320, 406720640, 813441280]

約数ペア:

[(1, 813441280), (2, 406720640), (4, 203360320), (5, 162688256), (8, 101680160), (10, 81344128), (16, 50840080), (20, 40672064), (32, 25420040), (40, 20336032), (64, 12710020), (80, 10168016), (128, 6355010), (160, 5084008), (239, 3403520), (256, 3177505), (320, 2542004), (478, 1701760), (640, 1271002), (956, 850880), (1195, 680704), (1280, 635501), (1912, 425440), (2390, 340352), (2659, 305920), (3824, 212720), (4780, 170176), (5318, 152960), (7648, 106360), (9560, 85088), (10636, 76480), (13295, 61184), (15296, 53180), (19120, 42544), (21272, 38240), (26590, 30592)]