644826780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1153}}^1$

素因数の和:1420

約数の個数: 144

約数和(自身を含む): 2117082240

約数和(自身を除く): 1472255460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 239, 260, 390, 468, 478, 585, 717, 780, 956, 1153, 1170, 1195, 1434, 2151, 2306, 2340, 2390, 2868, 3107, 3459, 3585, 4302, 4612, 4780, 5765, 6214, 6918, 7170, 8604, 9321, 10377, 10755, 11530, 12428, 13836, 14340, 14989, 15535, 17295, 18642, 20754, 21510, 23060, 27963, 29978, 31070, 34590, 37284, 41508, 43020, 44967, 46605, 51885, 55926, 59956, 62140, 69180, 74945, 89934, 93210, 103770, 111852, 134901, 139815, 149890, 179868, 186420, 207540, 224835, 269802, 275567, 279630, 299780, 449670, 539604, 551134, 559260, 674505, 826701, 899340, 1102268, 1349010, 1377835, 1653402, 2480103, 2698020, 2755670, 3306804, 3582371, 4133505, 4960206, 5511340, 7164742, 8267010, 9920412, 10747113, 12400515, 14329484, 16534020, 17911855, 21494226, 24801030, 32241339, 35823710, 42988452, 49602060, 53735565, 64482678, 71647420, 107471130, 128965356, 161206695, 214942260, 322413390, 644826780]

約数ペア:

[(1, 644826780), (2, 322413390), (3, 214942260), (4, 161206695), (5, 128965356), (6, 107471130), (9, 71647420), (10, 64482678), (12, 53735565), (13, 49602060), (15, 42988452), (18, 35823710), (20, 32241339), (26, 24801030), (30, 21494226), (36, 17911855), (39, 16534020), (45, 14329484), (52, 12400515), (60, 10747113), (65, 9920412), (78, 8267010), (90, 7164742), (117, 5511340), (130, 4960206), (156, 4133505), (180, 3582371), (195, 3306804), (234, 2755670), (239, 2698020), (260, 2480103), (390, 1653402), (468, 1377835), (478, 1349010), (585, 1102268), (717, 899340), (780, 826701), (956, 674505), (1153, 559260), (1170, 551134), (1195, 539604), (1434, 449670), (2151, 299780), (2306, 279630), (2340, 275567), (2390, 269802), (2868, 224835), (3107, 207540), (3459, 186420), (3585, 179868), (4302, 149890), (4612, 139815), (4780, 134901), (5765, 111852), (6214, 103770), (6918, 93210), (7170, 89934), (8604, 74945), (9321, 69180), (10377, 62140), (10755, 59956), (11530, 55926), (12428, 51885), (13836, 46605), (14340, 44967), (14989, 43020), (15535, 41508), (17295, 37284), (18642, 34590), (20754, 31070), (21510, 29978), (23060, 27963)]