161171920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{131}}^1$

素因数の和:190

約数の個数: 160

約数和(自身を含む): 467470080

約数和(自身を除く): 306298160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 131, 140, 169, 182, 208, 260, 262, 280, 338, 364, 455, 520, 524, 560, 655, 676, 728, 845, 910, 917, 1040, 1048, 1183, 1310, 1352, 1456, 1690, 1703, 1820, 1834, 2096, 2197, 2366, 2620, 2704, 3380, 3406, 3640, 3668, 4394, 4585, 4732, 5240, 5915, 6760, 6812, 7280, 7336, 8515, 8788, 9170, 9464, 10480, 10985, 11830, 11921, 13520, 13624, 14672, 15379, 17030, 17576, 18340, 18928, 21970, 22139, 23660, 23842, 27248, 30758, 34060, 35152, 36680, 43940, 44278, 47320, 47684, 59605, 61516, 68120, 73360, 76895, 87880, 88556, 94640, 95368, 110695, 119210, 123032, 136240, 153790, 154973, 175760, 177112, 190736, 221390, 238420, 246064, 287807, 307580, 309946, 354224, 442780, 476840, 575614, 615160, 619892, 774865, 885560, 953680, 1151228, 1230320, 1239784, 1439035, 1549730, 1771120, 2014649, 2302456, 2479568, 2878070, 3099460, 4029298, 4604912, 5756140, 6198920, 8058596, 10073245, 11512280, 12397840, 16117192, 20146490, 23024560, 32234384, 40292980, 80585960, 161171920]

約数ペア:

[(1, 161171920), (2, 80585960), (4, 40292980), (5, 32234384), (7, 23024560), (8, 20146490), (10, 16117192), (13, 12397840), (14, 11512280), (16, 10073245), (20, 8058596), (26, 6198920), (28, 5756140), (35, 4604912), (40, 4029298), (52, 3099460), (56, 2878070), (65, 2479568), (70, 2302456), (80, 2014649), (91, 1771120), (104, 1549730), (112, 1439035), (130, 1239784), (131, 1230320), (140, 1151228), (169, 953680), (182, 885560), (208, 774865), (260, 619892), (262, 615160), (280, 575614), (338, 476840), (364, 442780), (455, 354224), (520, 309946), (524, 307580), (560, 287807), (655, 246064), (676, 238420), (728, 221390), (845, 190736), (910, 177112), (917, 175760), (1040, 154973), (1048, 153790), (1183, 136240), (1310, 123032), (1352, 119210), (1456, 110695), (1690, 95368), (1703, 94640), (1820, 88556), (1834, 87880), (2096, 76895), (2197, 73360), (2366, 68120), (2620, 61516), (2704, 59605), (3380, 47684), (3406, 47320), (3640, 44278), (3668, 43940), (4394, 36680), (4585, 35152), (4732, 34060), (5240, 30758), (5915, 27248), (6760, 23842), (6812, 23660), (7280, 22139), (7336, 21970), (8515, 18928), (8788, 18340), (9170, 17576), (9464, 17030), (10480, 15379), (10985, 14672), (11830, 13624), (11921, 13520)]