19894190975

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{251}}^1\times {\mathrm{307}}^1\times {\mathrm{449}}^1$

素因数の和:1040

約数の個数: 48

約数和(自身を含む): 25985836800

約数和(自身を除く): 6091645825

約数列:

[1, 5, 23, 25, 115, 251, 307, 449, 575, 1255, 1535, 2245, 5773, 6275, 7061, 7675, 10327, 11225, 28865, 35305, 51635, 77057, 112699, 137843, 144325, 176525, 258175, 385285, 563495, 689215, 1772311, 1926425, 2592077, 2817475, 3170389, 3446075, 8861555, 12960385, 15851945, 34598593, 44307775, 64801925, 79259725, 172992965, 795767639, 864964825, 3978838195, 19894190975]

約数ペア:

[(1, 19894190975), (5, 3978838195), (23, 864964825), (25, 795767639), (115, 172992965), (251, 79259725), (307, 64801925), (449, 44307775), (575, 34598593), (1255, 15851945), (1535, 12960385), (2245, 8861555), (5773, 3446075), (6275, 3170389), (7061, 2817475), (7675, 2592077), (10327, 1926425), (11225, 1772311), (28865, 689215), (35305, 563495), (51635, 385285), (77057, 258175), (112699, 176525), (137843, 144325)]