20870325

素因数分解:

$3^3\times 5^2\times 7^2\times {\mathrm{631}}^1$

素因数の和:664

約数の個数: 72

約数和(自身を含む): 44669760

約数和(自身を除く): 23799435

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 49, 63, 75, 105, 135, 147, 175, 189, 225, 245, 315, 441, 525, 631, 675, 735, 945, 1225, 1323, 1575, 1893, 2205, 3155, 3675, 4417, 4725, 5679, 6615, 9465, 11025, 13251, 15775, 17037, 22085, 28395, 30919, 33075, 39753, 47325, 66255, 85185, 92757, 110425, 119259, 141975, 154595, 198765, 278271, 331275, 425925, 463785, 596295, 772975, 834813, 993825, 1391355, 2318925, 2981475, 4174065, 6956775, 20870325]

約数ペア:

[(1, 20870325), (3, 6956775), (5, 4174065), (7, 2981475), (9, 2318925), (15, 1391355), (21, 993825), (25, 834813), (27, 772975), (35, 596295), (45, 463785), (49, 425925), (63, 331275), (75, 278271), (105, 198765), (135, 154595), (147, 141975), (175, 119259), (189, 110425), (225, 92757), (245, 85185), (315, 66255), (441, 47325), (525, 39753), (631, 33075), (675, 30919), (735, 28395), (945, 22085), (1225, 17037), (1323, 15775), (1575, 13251), (1893, 11025), (2205, 9465), (3155, 6615), (3675, 5679), (4417, 4725)]