21155680

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1453}}^1$

素因数の和:1488

約数の個数: 96

約数和(自身を含む): 61556544

約数和(自身を除く): 40400864

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 364, 416, 455, 520, 560, 728, 910, 1040, 1120, 1453, 1456, 1820, 2080, 2906, 2912, 3640, 5812, 7265, 7280, 10171, 11624, 14530, 14560, 18889, 20342, 23248, 29060, 37778, 40684, 46496, 50855, 58120, 75556, 81368, 94445, 101710, 116240, 132223, 151112, 162736, 188890, 203420, 232480, 264446, 302224, 325472, 377780, 406840, 528892, 604448, 661115, 755560, 813680, 1057784, 1322230, 1511120, 1627360, 2115568, 2644460, 3022240, 4231136, 5288920, 10577840, 21155680]

約数ペア:

[(1, 21155680), (2, 10577840), (4, 5288920), (5, 4231136), (7, 3022240), (8, 2644460), (10, 2115568), (13, 1627360), (14, 1511120), (16, 1322230), (20, 1057784), (26, 813680), (28, 755560), (32, 661115), (35, 604448), (40, 528892), (52, 406840), (56, 377780), (65, 325472), (70, 302224), (80, 264446), (91, 232480), (104, 203420), (112, 188890), (130, 162736), (140, 151112), (160, 132223), (182, 116240), (208, 101710), (224, 94445), (260, 81368), (280, 75556), (364, 58120), (416, 50855), (455, 46496), (520, 40684), (560, 37778), (728, 29060), (910, 23248), (1040, 20342), (1120, 18889), (1453, 14560), (1456, 14530), (1820, 11624), (2080, 10171), (2906, 7280), (2912, 7265), (3640, 5812)]