18937900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 43747200

約数和(自身を除く): 24809300

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 41, 50, 62, 82, 100, 124, 149, 155, 164, 205, 298, 310, 410, 596, 620, 745, 775, 820, 1025, 1271, 1490, 1550, 2050, 2542, 2980, 3100, 3725, 4100, 4619, 5084, 6109, 6355, 7450, 9238, 12218, 12710, 14900, 18476, 23095, 24436, 25420, 30545, 31775, 46190, 61090, 63550, 92380, 115475, 122180, 127100, 152725, 189379, 230950, 305450, 378758, 461900, 610900, 757516, 946895, 1893790, 3787580, 4734475, 9468950, 18937900]

約数ペア:

[(1, 18937900), (2, 9468950), (4, 4734475), (5, 3787580), (10, 1893790), (20, 946895), (25, 757516), (31, 610900), (41, 461900), (50, 378758), (62, 305450), (82, 230950), (100, 189379), (124, 152725), (149, 127100), (155, 122180), (164, 115475), (205, 92380), (298, 63550), (310, 61090), (410, 46190), (596, 31775), (620, 30545), (745, 25420), (775, 24436), (820, 23095), (1025, 18476), (1271, 14900), (1490, 12710), (1550, 12218), (2050, 9238), (2542, 7450), (2980, 6355), (3100, 6109), (3725, 5084), (4100, 4619)]