18345392

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{991}}^1$

素因数の和:1101

約数の個数: 40

約数和(自身を含む): 38747520

約数和(自身を除く): 20402128

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 89, 104, 178, 208, 356, 712, 991, 1157, 1424, 1982, 2314, 3964, 4628, 7928, 9256, 12883, 15856, 18512, 25766, 51532, 88199, 103064, 176398, 206128, 352796, 705592, 1146587, 1411184, 2293174, 4586348, 9172696, 18345392]

約数ペア:

[(1, 18345392), (2, 9172696), (4, 4586348), (8, 2293174), (13, 1411184), (16, 1146587), (26, 705592), (52, 352796), (89, 206128), (104, 176398), (178, 103064), (208, 88199), (356, 51532), (712, 25766), (991, 18512), (1157, 15856), (1424, 12883), (1982, 9256), (2314, 7928), (3964, 4628)]