217288260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{521}}^1$

素因数の和:874

約数の個数: 144

約数和(自身を含む): 756991872

約数和(自身を除く): 539703612

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 331, 420, 521, 630, 662, 993, 1042, 1260, 1324, 1563, 1655, 1986, 2084, 2317, 2605, 2979, 3126, 3310, 3647, 3972, 4634, 4689, 4965, 5210, 5958, 6252, 6620, 6951, 7294, 7815, 9268, 9378, 9930, 10420, 10941, 11585, 11916, 13902, 14588, 14895, 15630, 18235, 18756, 19860, 20853, 21882, 23170, 23445, 27804, 29790, 31260, 32823, 34755, 36470, 41706, 43764, 46340, 46890, 54705, 59580, 65646, 69510, 72940, 83412, 93780, 104265, 109410, 131292, 139020, 164115, 172451, 208530, 218820, 328230, 344902, 417060, 517353, 656460, 689804, 862255, 1034706, 1207157, 1552059, 1724510, 2069412, 2414314, 2586765, 3104118, 3449020, 3621471, 4828628, 5173530, 6035785, 6208236, 7242942, 7760295, 10347060, 10864413, 12071570, 14485884, 15520590, 18107355, 21728826, 24143140, 31041180, 36214710, 43457652, 54322065, 72429420, 108644130, 217288260]

約数ペア:

[(1, 217288260), (2, 108644130), (3, 72429420), (4, 54322065), (5, 43457652), (6, 36214710), (7, 31041180), (9, 24143140), (10, 21728826), (12, 18107355), (14, 15520590), (15, 14485884), (18, 12071570), (20, 10864413), (21, 10347060), (28, 7760295), (30, 7242942), (35, 6208236), (36, 6035785), (42, 5173530), (45, 4828628), (60, 3621471), (63, 3449020), (70, 3104118), (84, 2586765), (90, 2414314), (105, 2069412), (126, 1724510), (140, 1552059), (180, 1207157), (210, 1034706), (252, 862255), (315, 689804), (331, 656460), (420, 517353), (521, 417060), (630, 344902), (662, 328230), (993, 218820), (1042, 208530), (1260, 172451), (1324, 164115), (1563, 139020), (1655, 131292), (1986, 109410), (2084, 104265), (2317, 93780), (2605, 83412), (2979, 72940), (3126, 69510), (3310, 65646), (3647, 59580), (3972, 54705), (4634, 46890), (4689, 46340), (4965, 43764), (5210, 41706), (5958, 36470), (6252, 34755), (6620, 32823), (6951, 31260), (7294, 29790), (7815, 27804), (9268, 23445), (9378, 23170), (9930, 21882), (10420, 20853), (10941, 19860), (11585, 18756), (11916, 18235), (13902, 15630), (14588, 14895)]