20496840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1877}}^1$

素因数の和:1911

約数の個数: 128

約数和(自身を含む): 75720960

約数和(自身を除く): 55224120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 1877, 2184, 2730, 3640, 3754, 5460, 5631, 7508, 9385, 10920, 11262, 13139, 15016, 18770, 22524, 24401, 26278, 28155, 37540, 39417, 45048, 48802, 52556, 56310, 65695, 73203, 75080, 78834, 97604, 105112, 112620, 122005, 131390, 146406, 157668, 170807, 195208, 197085, 225240, 244010, 262780, 292812, 315336, 341614, 366015, 394170, 488020, 512421, 525560, 585624, 683228, 732030, 788340, 854035, 976040, 1024842, 1366456, 1464060, 1576680, 1708070, 2049684, 2562105, 2928120, 3416140, 4099368, 5124210, 6832280, 10248420, 20496840]

約数ペア:

[(1, 20496840), (2, 10248420), (3, 6832280), (4, 5124210), (5, 4099368), (6, 3416140), (7, 2928120), (8, 2562105), (10, 2049684), (12, 1708070), (13, 1576680), (14, 1464060), (15, 1366456), (20, 1024842), (21, 976040), (24, 854035), (26, 788340), (28, 732030), (30, 683228), (35, 585624), (39, 525560), (40, 512421), (42, 488020), (52, 394170), (56, 366015), (60, 341614), (65, 315336), (70, 292812), (78, 262780), (84, 244010), (91, 225240), (104, 197085), (105, 195208), (120, 170807), (130, 157668), (140, 146406), (156, 131390), (168, 122005), (182, 112620), (195, 105112), (210, 97604), (260, 78834), (273, 75080), (280, 73203), (312, 65695), (364, 56310), (390, 52556), (420, 48802), (455, 45048), (520, 39417), (546, 37540), (728, 28155), (780, 26278), (840, 24401), (910, 22524), (1092, 18770), (1365, 15016), (1560, 13139), (1820, 11262), (1877, 10920), (2184, 9385), (2730, 7508), (3640, 5631), (3754, 5460)]