2019684880

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1\times {\mathrm{1381}}^1$

素因数の和:1676

約数の個数: 80

約数和(自身を含む): 4771913328

約数和(自身を除く): 2752228448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 181, 202, 362, 404, 505, 724, 808, 905, 1010, 1381, 1448, 1616, 1810, 2020, 2762, 2896, 3620, 4040, 5524, 6905, 7240, 8080, 11048, 13810, 14480, 18281, 22096, 27620, 36562, 55240, 73124, 91405, 110480, 139481, 146248, 182810, 249961, 278962, 292496, 365620, 499922, 557924, 697405, 731240, 999844, 1115848, 1249805, 1394810, 1462480, 1999688, 2231696, 2499610, 2789620, 3999376, 4999220, 5579240, 9998440, 11158480, 19996880, 25246061, 50492122, 100984244, 126230305, 201968488, 252460610, 403936976, 504921220, 1009842440, 2019684880]

約数ペア:

[(1, 2019684880), (2, 1009842440), (4, 504921220), (5, 403936976), (8, 252460610), (10, 201968488), (16, 126230305), (20, 100984244), (40, 50492122), (80, 25246061), (101, 19996880), (181, 11158480), (202, 9998440), (362, 5579240), (404, 4999220), (505, 3999376), (724, 2789620), (808, 2499610), (905, 2231696), (1010, 1999688), (1381, 1462480), (1448, 1394810), (1616, 1249805), (1810, 1115848), (2020, 999844), (2762, 731240), (2896, 697405), (3620, 557924), (4040, 499922), (5524, 365620), (6905, 292496), (7240, 278962), (8080, 249961), (11048, 182810), (13810, 146248), (14480, 139481), (18281, 110480), (22096, 91405), (27620, 73124), (36562, 55240)]