19457180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{643}}^1$

素因数の和:758

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 24360580

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 170, 178, 340, 356, 445, 643, 890, 1286, 1513, 1780, 2572, 3026, 3215, 6052, 6430, 7565, 10931, 12860, 15130, 21862, 30260, 43724, 54655, 57227, 109310, 114454, 218620, 228908, 286135, 572270, 972859, 1144540, 1945718, 3891436, 4864295, 9728590, 19457180]

約数ペア:

[(1, 19457180), (2, 9728590), (4, 4864295), (5, 3891436), (10, 1945718), (17, 1144540), (20, 972859), (34, 572270), (68, 286135), (85, 228908), (89, 218620), (170, 114454), (178, 109310), (340, 57227), (356, 54655), (445, 43724), (643, 30260), (890, 21862), (1286, 15130), (1513, 12860), (1780, 10931), (2572, 7565), (3026, 6430), (3215, 6052)]