20212101

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1$

素因数の和:115

約数の個数: 96

約数和(自身を含む): 39836160

約数和(自身を除く): 19624059

約数列:

[1, 3, 7, 9, 13, 21, 23, 29, 37, 39, 63, 69, 87, 91, 111, 117, 161, 203, 207, 259, 261, 273, 299, 333, 377, 481, 483, 609, 667, 777, 819, 851, 897, 1073, 1131, 1443, 1449, 1827, 2001, 2093, 2331, 2553, 2639, 2691, 3219, 3367, 3393, 4329, 4669, 5957, 6003, 6279, 7511, 7659, 7917, 8671, 9657, 10101, 11063, 13949, 14007, 17871, 18837, 22533, 23751, 24679, 26013, 30303, 33189, 41847, 42021, 53613, 60697, 67599, 74037, 77441, 78039, 97643, 99567, 125541, 172753, 182091, 222111, 232323, 292929, 320827, 518259, 546273, 696969, 878787, 962481, 1554777, 2245789, 2887443, 6737367, 20212101]

約数ペア:

[(1, 20212101), (3, 6737367), (7, 2887443), (9, 2245789), (13, 1554777), (21, 962481), (23, 878787), (29, 696969), (37, 546273), (39, 518259), (63, 320827), (69, 292929), (87, 232323), (91, 222111), (111, 182091), (117, 172753), (161, 125541), (203, 99567), (207, 97643), (259, 78039), (261, 77441), (273, 74037), (299, 67599), (333, 60697), (377, 53613), (481, 42021), (483, 41847), (609, 33189), (667, 30303), (777, 26013), (819, 24679), (851, 23751), (897, 22533), (1073, 18837), (1131, 17871), (1443, 14007), (1449, 13949), (1827, 11063), (2001, 10101), (2093, 9657), (2331, 8671), (2553, 7917), (2639, 7659), (2691, 7511), (3219, 6279), (3367, 6003), (3393, 5957), (4329, 4669)]