78848840

素因数分解:

$2^3\times 5^1\times 7^4\times {\mathrm{821}}^1$

素因数の和:860

約数の個数: 80

約数和(自身を含む): 207217980

約数和(自身を除く): 128369140

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 821, 980, 1372, 1642, 1715, 1960, 2401, 2744, 3284, 3430, 4105, 4802, 5747, 6568, 6860, 8210, 9604, 11494, 12005, 13720, 16420, 19208, 22988, 24010, 28735, 32840, 40229, 45976, 48020, 57470, 80458, 96040, 114940, 160916, 201145, 229880, 281603, 321832, 402290, 563206, 804580, 1126412, 1408015, 1609160, 1971221, 2252824, 2816030, 3942442, 5632060, 7884884, 9856105, 11264120, 15769768, 19712210, 39424420, 78848840]

約数ペア:

[(1, 78848840), (2, 39424420), (4, 19712210), (5, 15769768), (7, 11264120), (8, 9856105), (10, 7884884), (14, 5632060), (20, 3942442), (28, 2816030), (35, 2252824), (40, 1971221), (49, 1609160), (56, 1408015), (70, 1126412), (98, 804580), (140, 563206), (196, 402290), (245, 321832), (280, 281603), (343, 229880), (392, 201145), (490, 160916), (686, 114940), (821, 96040), (980, 80458), (1372, 57470), (1642, 48020), (1715, 45976), (1960, 40229), (2401, 32840), (2744, 28735), (3284, 24010), (3430, 22988), (4105, 19208), (4802, 16420), (5747, 13720), (6568, 12005), (6860, 11494), (8210, 9604)]