20403684

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:354

約数の個数: 96

約数和(自身を含む): 61205760

約数和(自身を除く): 40802076

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 137, 189, 197, 252, 274, 378, 394, 411, 548, 591, 756, 788, 822, 959, 1182, 1233, 1379, 1644, 1773, 1918, 2364, 2466, 2758, 2877, 3546, 3699, 3836, 4137, 4932, 5319, 5516, 5754, 7092, 7398, 8274, 8631, 10638, 11508, 12411, 14796, 16548, 17262, 21276, 24822, 25893, 26989, 34524, 37233, 49644, 51786, 53978, 74466, 80967, 103572, 107956, 148932, 161934, 188923, 242901, 323868, 377846, 485802, 566769, 728703, 755692, 971604, 1133538, 1457406, 1700307, 2267076, 2914812, 3400614, 5100921, 6801228, 10201842, 20403684]

約数ペア:

[(1, 20403684), (2, 10201842), (3, 6801228), (4, 5100921), (6, 3400614), (7, 2914812), (9, 2267076), (12, 1700307), (14, 1457406), (18, 1133538), (21, 971604), (27, 755692), (28, 728703), (36, 566769), (42, 485802), (54, 377846), (63, 323868), (84, 242901), (108, 188923), (126, 161934), (137, 148932), (189, 107956), (197, 103572), (252, 80967), (274, 74466), (378, 53978), (394, 51786), (411, 49644), (548, 37233), (591, 34524), (756, 26989), (788, 25893), (822, 24822), (959, 21276), (1182, 17262), (1233, 16548), (1379, 14796), (1644, 12411), (1773, 11508), (1918, 10638), (2364, 8631), (2466, 8274), (2758, 7398), (2877, 7092), (3546, 5754), (3699, 5516), (3836, 5319), (4137, 4932)]