21824920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^2$

素因数の和:137

約数の個数: 96

約数和(自身を含む): 56876400

約数和(自身を除く): 35051480

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 47, 52, 65, 76, 94, 95, 104, 130, 152, 188, 190, 235, 247, 260, 376, 380, 470, 494, 520, 611, 760, 893, 940, 988, 1222, 1235, 1786, 1880, 1976, 2209, 2444, 2470, 3055, 3572, 4418, 4465, 4888, 4940, 6110, 7144, 8836, 8930, 9880, 11045, 11609, 12220, 17672, 17860, 22090, 23218, 24440, 28717, 35720, 41971, 44180, 46436, 57434, 58045, 83942, 88360, 92872, 114868, 116090, 143585, 167884, 209855, 229736, 232180, 287170, 335768, 419710, 464360, 545623, 574340, 839420, 1091246, 1148680, 1678840, 2182492, 2728115, 4364984, 5456230, 10912460, 21824920]

約数ペア:

[(1, 21824920), (2, 10912460), (4, 5456230), (5, 4364984), (8, 2728115), (10, 2182492), (13, 1678840), (19, 1148680), (20, 1091246), (26, 839420), (38, 574340), (40, 545623), (47, 464360), (52, 419710), (65, 335768), (76, 287170), (94, 232180), (95, 229736), (104, 209855), (130, 167884), (152, 143585), (188, 116090), (190, 114868), (235, 92872), (247, 88360), (260, 83942), (376, 58045), (380, 57434), (470, 46436), (494, 44180), (520, 41971), (611, 35720), (760, 28717), (893, 24440), (940, 23218), (988, 22090), (1222, 17860), (1235, 17672), (1786, 12220), (1880, 11609), (1976, 11045), (2209, 9880), (2444, 8930), (2470, 8836), (3055, 7144), (3572, 6110), (4418, 4940), (4465, 4888)]