155901340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{619}}^1$

素因数の和:899

約数の個数: 72

約数和(自身を含む): 382944240

約数和(自身を除く): 227042900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 257, 490, 514, 619, 980, 1028, 1238, 1285, 1799, 2476, 2570, 3095, 3598, 4333, 5140, 6190, 7196, 8666, 8995, 12380, 12593, 17332, 17990, 21665, 25186, 30331, 35980, 43330, 50372, 60662, 62965, 86660, 121324, 125930, 151655, 159083, 251860, 303310, 318166, 606620, 636332, 795415, 1113581, 1590830, 2227162, 3181660, 4454324, 5567905, 7795067, 11135810, 15590134, 22271620, 31180268, 38975335, 77950670, 155901340]

約数ペア:

[(1, 155901340), (2, 77950670), (4, 38975335), (5, 31180268), (7, 22271620), (10, 15590134), (14, 11135810), (20, 7795067), (28, 5567905), (35, 4454324), (49, 3181660), (70, 2227162), (98, 1590830), (140, 1113581), (196, 795415), (245, 636332), (257, 606620), (490, 318166), (514, 303310), (619, 251860), (980, 159083), (1028, 151655), (1238, 125930), (1285, 121324), (1799, 86660), (2476, 62965), (2570, 60662), (3095, 50372), (3598, 43330), (4333, 35980), (5140, 30331), (6190, 25186), (7196, 21665), (8666, 17990), (8995, 17332), (12380, 12593)]