217391840

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1069}}^1$

素因数の和:1156

約数の個数: 96

約数和(自身を含む): 543594240

約数和(自身を除く): 326202400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 41, 62, 80, 82, 124, 155, 160, 164, 205, 248, 310, 328, 410, 496, 620, 656, 820, 992, 1069, 1240, 1271, 1312, 1640, 2138, 2480, 2542, 3280, 4276, 4960, 5084, 5345, 6355, 6560, 8552, 10168, 10690, 12710, 17104, 20336, 21380, 25420, 33139, 34208, 40672, 42760, 43829, 50840, 66278, 85520, 87658, 101680, 132556, 165695, 171040, 175316, 203360, 219145, 265112, 331390, 350632, 438290, 530224, 662780, 701264, 876580, 1060448, 1325560, 1358699, 1402528, 1753160, 2651120, 2717398, 3506320, 5302240, 5434796, 6793495, 7012640, 10869592, 13586990, 21739184, 27173980, 43478368, 54347960, 108695920, 217391840]

約数ペア:

[(1, 217391840), (2, 108695920), (4, 54347960), (5, 43478368), (8, 27173980), (10, 21739184), (16, 13586990), (20, 10869592), (31, 7012640), (32, 6793495), (40, 5434796), (41, 5302240), (62, 3506320), (80, 2717398), (82, 2651120), (124, 1753160), (155, 1402528), (160, 1358699), (164, 1325560), (205, 1060448), (248, 876580), (310, 701264), (328, 662780), (410, 530224), (496, 438290), (620, 350632), (656, 331390), (820, 265112), (992, 219145), (1069, 203360), (1240, 175316), (1271, 171040), (1312, 165695), (1640, 132556), (2138, 101680), (2480, 87658), (2542, 85520), (3280, 66278), (4276, 50840), (4960, 43829), (5084, 42760), (5345, 40672), (6355, 34208), (6560, 33139), (8552, 25420), (10168, 21380), (10690, 20336), (12710, 17104)]