21905156772

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{977}}^1\times {\mathrm{32779}}^1$

素因数の和:33785

約数の個数: 72

約数和(自身を含む): 58347088800

約数和(自身を除く): 36441932028

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684, 977, 1954, 2931, 3908, 5862, 8793, 11724, 17586, 18563, 32779, 35172, 37126, 55689, 65558, 74252, 98337, 111378, 131116, 167067, 196674, 222756, 295011, 334134, 393348, 590022, 622801, 668268, 1180044, 1245602, 1868403, 2491204, 3736806, 5605209, 7473612, 11210418, 22420836, 32025083, 64050166, 96075249, 128100332, 192150498, 288225747, 384300996, 576451494, 608476577, 1152902988, 1216953154, 1825429731, 2433906308, 3650859462, 5476289193, 7301718924, 10952578386, 21905156772]

約数ペア:

[(1, 21905156772), (2, 10952578386), (3, 7301718924), (4, 5476289193), (6, 3650859462), (9, 2433906308), (12, 1825429731), (18, 1216953154), (19, 1152902988), (36, 608476577), (38, 576451494), (57, 384300996), (76, 288225747), (114, 192150498), (171, 128100332), (228, 96075249), (342, 64050166), (684, 32025083), (977, 22420836), (1954, 11210418), (2931, 7473612), (3908, 5605209), (5862, 3736806), (8793, 2491204), (11724, 1868403), (17586, 1245602), (18563, 1180044), (32779, 668268), (35172, 622801), (37126, 590022), (55689, 393348), (65558, 334134), (74252, 295011), (98337, 222756), (111378, 196674), (131116, 167067)]