80200100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{631}}^1$

素因数の和:717

約数の個数: 72

約数和(自身を含む): 184321536

約数和(自身を除く): 104121436

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 41, 50, 62, 82, 100, 124, 155, 164, 205, 310, 410, 620, 631, 775, 820, 1025, 1262, 1271, 1550, 2050, 2524, 2542, 3100, 3155, 4100, 5084, 6310, 6355, 12620, 12710, 15775, 19561, 25420, 25871, 31550, 31775, 39122, 51742, 63100, 63550, 78244, 97805, 103484, 127100, 129355, 195610, 258710, 391220, 489025, 517420, 646775, 802001, 978050, 1293550, 1604002, 1956100, 2587100, 3208004, 4010005, 8020010, 16040020, 20050025, 40100050, 80200100]

約数ペア:

[(1, 80200100), (2, 40100050), (4, 20050025), (5, 16040020), (10, 8020010), (20, 4010005), (25, 3208004), (31, 2587100), (41, 1956100), (50, 1604002), (62, 1293550), (82, 978050), (100, 802001), (124, 646775), (155, 517420), (164, 489025), (205, 391220), (310, 258710), (410, 195610), (620, 129355), (631, 127100), (775, 103484), (820, 97805), (1025, 78244), (1262, 63550), (1271, 63100), (1550, 51742), (2050, 39122), (2524, 31775), (2542, 31550), (3100, 25871), (3155, 25420), (4100, 19561), (5084, 15775), (6310, 12710), (6355, 12620)]