20181279950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{457}}^1\times {\mathrm{67939}}^1$

素因数の和:68421

約数の個数: 48

約数和(自身を含む): 40513709040

約数和(自身を除く): 20332429090

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 457, 650, 914, 2285, 4570, 5941, 11425, 11882, 22850, 29705, 59410, 67939, 135878, 148525, 297050, 339695, 679390, 883207, 1698475, 1766414, 3396950, 4416035, 8832070, 22080175, 31048123, 44160350, 62096246, 155240615, 310481230, 403625599, 776203075, 807251198, 1552406150, 2018127995, 4036255990, 10090639975, 20181279950]

約数ペア:

[(1, 20181279950), (2, 10090639975), (5, 4036255990), (10, 2018127995), (13, 1552406150), (25, 807251198), (26, 776203075), (50, 403625599), (65, 310481230), (130, 155240615), (325, 62096246), (457, 44160350), (650, 31048123), (914, 22080175), (2285, 8832070), (4570, 4416035), (5941, 3396950), (11425, 1766414), (11882, 1698475), (22850, 883207), (29705, 679390), (59410, 339695), (67939, 297050), (135878, 148525)]