20899687040

素因数分解:

$2^7\times 5^1\times {\mathrm{1217}}^1\times {\mathrm{26833}}^1$

素因数の和:28069

約数の個数: 64

約数和(自身を含む): 50006232360

約数和(自身を除く): 29106545320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1217, 2434, 4868, 6085, 9736, 12170, 19472, 24340, 26833, 38944, 48680, 53666, 77888, 97360, 107332, 134165, 155776, 194720, 214664, 268330, 389440, 429328, 536660, 778880, 858656, 1073320, 1717312, 2146640, 3434624, 4293280, 8586560, 17173120, 32655761, 65311522, 130623044, 163278805, 261246088, 326557610, 522492176, 653115220, 1044984352, 1306230440, 2089968704, 2612460880, 4179937408, 5224921760, 10449843520, 20899687040]

約数ペア:

[(1, 20899687040), (2, 10449843520), (4, 5224921760), (5, 4179937408), (8, 2612460880), (10, 2089968704), (16, 1306230440), (20, 1044984352), (32, 653115220), (40, 522492176), (64, 326557610), (80, 261246088), (128, 163278805), (160, 130623044), (320, 65311522), (640, 32655761), (1217, 17173120), (2434, 8586560), (4868, 4293280), (6085, 3434624), (9736, 2146640), (12170, 1717312), (19472, 1073320), (24340, 858656), (26833, 778880), (38944, 536660), (48680, 429328), (53666, 389440), (77888, 268330), (97360, 214664), (107332, 194720), (134165, 155776)]