21874580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 61535376

約数和(自身を除く): 39660796

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 49, 52, 65, 68, 70, 85, 91, 98, 101, 119, 130, 140, 170, 182, 196, 202, 221, 238, 245, 260, 340, 364, 404, 442, 455, 476, 490, 505, 595, 637, 707, 833, 884, 910, 980, 1010, 1105, 1190, 1274, 1313, 1414, 1547, 1666, 1717, 1820, 2020, 2210, 2380, 2548, 2626, 2828, 3094, 3185, 3332, 3434, 3535, 4165, 4420, 4949, 5252, 6188, 6370, 6565, 6868, 7070, 7735, 8330, 8585, 9191, 9898, 10829, 12019, 12740, 13130, 14140, 15470, 16660, 17170, 18382, 19796, 21658, 22321, 24038, 24745, 26260, 30940, 34340, 36764, 43316, 44642, 45955, 48076, 49490, 54145, 60095, 64337, 84133, 89284, 91910, 98980, 108290, 111605, 120190, 128674, 156247, 168266, 183820, 216580, 223210, 240380, 257348, 312494, 321685, 336532, 420665, 446420, 624988, 643370, 781235, 841330, 1093729, 1286740, 1562470, 1682660, 2187458, 3124940, 4374916, 5468645, 10937290, 21874580]

約数ペア:

[(1, 21874580), (2, 10937290), (4, 5468645), (5, 4374916), (7, 3124940), (10, 2187458), (13, 1682660), (14, 1562470), (17, 1286740), (20, 1093729), (26, 841330), (28, 781235), (34, 643370), (35, 624988), (49, 446420), (52, 420665), (65, 336532), (68, 321685), (70, 312494), (85, 257348), (91, 240380), (98, 223210), (101, 216580), (119, 183820), (130, 168266), (140, 156247), (170, 128674), (182, 120190), (196, 111605), (202, 108290), (221, 98980), (238, 91910), (245, 89284), (260, 84133), (340, 64337), (364, 60095), (404, 54145), (442, 49490), (455, 48076), (476, 45955), (490, 44642), (505, 43316), (595, 36764), (637, 34340), (707, 30940), (833, 26260), (884, 24745), (910, 24038), (980, 22321), (1010, 21658), (1105, 19796), (1190, 18382), (1274, 17170), (1313, 16660), (1414, 15470), (1547, 14140), (1666, 13130), (1717, 12740), (1820, 12019), (2020, 10829), (2210, 9898), (2380, 9191), (2548, 8585), (2626, 8330), (2828, 7735), (3094, 7070), (3185, 6868), (3332, 6565), (3434, 6370), (3535, 6188), (4165, 5252), (4420, 4949)]