2018500520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{39703}}^1$

素因数の和:39786

約数の個数: 64

約数和(自身を含む): 4802595840

約数和(自身を除く): 2784095320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 410, 620, 820, 1240, 1271, 1640, 2542, 5084, 6355, 10168, 12710, 25420, 39703, 50840, 79406, 158812, 198515, 317624, 397030, 794060, 1230793, 1588120, 1627823, 2461586, 3255646, 4923172, 6153965, 6511292, 8139115, 9846344, 12307930, 13022584, 16278230, 24615860, 32556460, 49231720, 50462513, 65112920, 100925026, 201850052, 252312565, 403700104, 504625130, 1009250260, 2018500520]

約数ペア:

[(1, 2018500520), (2, 1009250260), (4, 504625130), (5, 403700104), (8, 252312565), (10, 201850052), (20, 100925026), (31, 65112920), (40, 50462513), (41, 49231720), (62, 32556460), (82, 24615860), (124, 16278230), (155, 13022584), (164, 12307930), (205, 9846344), (248, 8139115), (310, 6511292), (328, 6153965), (410, 4923172), (620, 3255646), (820, 2461586), (1240, 1627823), (1271, 1588120), (1640, 1230793), (2542, 794060), (5084, 397030), (6355, 317624), (10168, 198515), (12710, 158812), (25420, 79406), (39703, 50840)]