78289840

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^2\times {\mathrm{263}}^1$

素因数の和:398

約数の個数: 60

約数和(自身を含む): 185760432

約数和(自身を除く): 107470592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 263, 305, 488, 526, 610, 976, 1052, 1220, 1315, 2104, 2440, 2630, 3721, 4208, 4880, 5260, 7442, 10520, 14884, 16043, 18605, 21040, 29768, 32086, 37210, 59536, 64172, 74420, 80215, 128344, 148840, 160430, 256688, 297680, 320860, 641720, 978623, 1283440, 1957246, 3914492, 4893115, 7828984, 9786230, 15657968, 19572460, 39144920, 78289840]

約数ペア:

[(1, 78289840), (2, 39144920), (4, 19572460), (5, 15657968), (8, 9786230), (10, 7828984), (16, 4893115), (20, 3914492), (40, 1957246), (61, 1283440), (80, 978623), (122, 641720), (244, 320860), (263, 297680), (305, 256688), (488, 160430), (526, 148840), (610, 128344), (976, 80215), (1052, 74420), (1220, 64172), (1315, 59536), (2104, 37210), (2440, 32086), (2630, 29768), (3721, 21040), (4208, 18605), (4880, 16043), (5260, 14884), (7442, 10520)]