20809548

素因数分解:

$2^2\times 3^5\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:369

約数の個数: 72

約数和(自身を含む): 55444480

約数和(自身を除く): 34634932

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 79, 81, 108, 158, 162, 237, 243, 271, 316, 324, 474, 486, 542, 711, 813, 948, 972, 1084, 1422, 1626, 2133, 2439, 2844, 3252, 4266, 4878, 6399, 7317, 8532, 9756, 12798, 14634, 19197, 21409, 21951, 25596, 29268, 38394, 42818, 43902, 64227, 65853, 76788, 85636, 87804, 128454, 131706, 192681, 256908, 263412, 385362, 578043, 770724, 1156086, 1734129, 2312172, 3468258, 5202387, 6936516, 10404774, 20809548]

約数ペア:

[(1, 20809548), (2, 10404774), (3, 6936516), (4, 5202387), (6, 3468258), (9, 2312172), (12, 1734129), (18, 1156086), (27, 770724), (36, 578043), (54, 385362), (79, 263412), (81, 256908), (108, 192681), (158, 131706), (162, 128454), (237, 87804), (243, 85636), (271, 76788), (316, 65853), (324, 64227), (474, 43902), (486, 42818), (542, 38394), (711, 29268), (813, 25596), (948, 21951), (972, 21409), (1084, 19197), (1422, 14634), (1626, 12798), (2133, 9756), (2439, 8532), (2844, 7317), (3252, 6399), (4266, 4878)]