21352240

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{419}}^1$

素因数の和:459

約数の個数: 120

約数和(自身を含む): 62339760

約数和(自身を除く): 40987520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 245, 260, 280, 364, 392, 419, 455, 490, 520, 560, 637, 728, 784, 838, 910, 980, 1040, 1274, 1456, 1676, 1820, 1960, 2095, 2548, 2933, 3185, 3352, 3640, 3920, 4190, 5096, 5447, 5866, 6370, 6704, 7280, 8380, 10192, 10894, 11732, 12740, 14665, 16760, 20531, 21788, 23464, 25480, 27235, 29330, 33520, 38129, 41062, 43576, 46928, 50960, 54470, 58660, 76258, 82124, 87152, 102655, 108940, 117320, 152516, 164248, 190645, 205310, 217880, 234640, 266903, 305032, 328496, 381290, 410620, 435760, 533806, 610064, 762580, 821240, 1067612, 1334515, 1525160, 1642480, 2135224, 2669030, 3050320, 4270448, 5338060, 10676120, 21352240]

約数ペア:

[(1, 21352240), (2, 10676120), (4, 5338060), (5, 4270448), (7, 3050320), (8, 2669030), (10, 2135224), (13, 1642480), (14, 1525160), (16, 1334515), (20, 1067612), (26, 821240), (28, 762580), (35, 610064), (40, 533806), (49, 435760), (52, 410620), (56, 381290), (65, 328496), (70, 305032), (80, 266903), (91, 234640), (98, 217880), (104, 205310), (112, 190645), (130, 164248), (140, 152516), (182, 117320), (196, 108940), (208, 102655), (245, 87152), (260, 82124), (280, 76258), (364, 58660), (392, 54470), (419, 50960), (455, 46928), (490, 43576), (520, 41062), (560, 38129), (637, 33520), (728, 29330), (784, 27235), (838, 25480), (910, 23464), (980, 21788), (1040, 20531), (1274, 16760), (1456, 14665), (1676, 12740), (1820, 11732), (1960, 10894), (2095, 10192), (2548, 8380), (2933, 7280), (3185, 6704), (3352, 6370), (3640, 5866), (3920, 5447), (4190, 5096)]