161561636

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{379}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 306432000

約数和(自身を除く): 144870364

約数列:

[1, 2, 4, 19, 38, 71, 76, 79, 142, 158, 284, 316, 379, 758, 1349, 1501, 1516, 2698, 3002, 5396, 5609, 6004, 7201, 11218, 14402, 22436, 26909, 28804, 29941, 53818, 59882, 106571, 107636, 119764, 213142, 426284, 511271, 568879, 1022542, 1137758, 2045084, 2125811, 2275516, 4251622, 8503244, 40390409, 80780818, 161561636]

約数ペア:

[(1, 161561636), (2, 80780818), (4, 40390409), (19, 8503244), (38, 4251622), (71, 2275516), (76, 2125811), (79, 2045084), (142, 1137758), (158, 1022542), (284, 568879), (316, 511271), (379, 426284), (758, 213142), (1349, 119764), (1501, 107636), (1516, 106571), (2698, 59882), (3002, 53818), (5396, 29941), (5609, 28804), (6004, 26909), (7201, 22436), (11218, 14402)]