19940416688

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{222113}}^1$

素因数の和:222333

約数の個数: 40

約数和(自身を含む): 40101350016

約数和(自身を除く): 20160933328

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 181, 248, 362, 496, 724, 1448, 2896, 5611, 11222, 22444, 44888, 89776, 222113, 444226, 888452, 1776904, 3553808, 6885503, 13771006, 27542012, 40202453, 55084024, 80404906, 110168048, 160809812, 321619624, 643239248, 1246276043, 2492552086, 4985104172, 9970208344, 19940416688]

約数ペア:

[(1, 19940416688), (2, 9970208344), (4, 4985104172), (8, 2492552086), (16, 1246276043), (31, 643239248), (62, 321619624), (124, 160809812), (181, 110168048), (248, 80404906), (362, 55084024), (496, 40202453), (724, 27542012), (1448, 13771006), (2896, 6885503), (5611, 3553808), (11222, 1776904), (22444, 888452), (44888, 444226), (89776, 222113)]