19409720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1423}}^1$

素因数の和:1476

約数の個数: 64

約数和(自身を含む): 49213440

約数和(自身を除く): 29803720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1423, 1705, 2728, 2846, 3410, 5692, 6820, 7115, 11384, 13640, 14230, 15653, 28460, 31306, 44113, 56920, 62612, 78265, 88226, 125224, 156530, 176452, 220565, 313060, 352904, 441130, 485243, 626120, 882260, 970486, 1764520, 1940972, 2426215, 3881944, 4852430, 9704860, 19409720]

約数ペア:

[(1, 19409720), (2, 9704860), (4, 4852430), (5, 3881944), (8, 2426215), (10, 1940972), (11, 1764520), (20, 970486), (22, 882260), (31, 626120), (40, 485243), (44, 441130), (55, 352904), (62, 313060), (88, 220565), (110, 176452), (124, 156530), (155, 125224), (220, 88226), (248, 78265), (310, 62612), (341, 56920), (440, 44113), (620, 31306), (682, 28460), (1240, 15653), (1364, 14230), (1423, 13640), (1705, 11384), (2728, 7115), (2846, 6820), (3410, 5692)]