28726740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{3257}}^1$

素因数の和:3286

約数の個数: 108

約数和(自身を含む): 101395476

約数和(自身を除く): 72668736

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 3257, 4410, 6514, 8820, 9771, 13028, 16285, 19542, 22799, 29313, 32570, 39084, 45598, 48855, 58626, 65140, 68397, 91196, 97710, 113995, 117252, 136794, 146565, 159593, 195420, 205191, 227990, 273588, 293130, 319186, 341985, 410382, 455980, 478779, 586260, 638372, 683970, 797965, 820764, 957558, 1025955, 1367940, 1436337, 1595930, 1915116, 2051910, 2393895, 2872674, 3191860, 4103820, 4787790, 5745348, 7181685, 9575580, 14363370, 28726740]

約数ペア:

[(1, 28726740), (2, 14363370), (3, 9575580), (4, 7181685), (5, 5745348), (6, 4787790), (7, 4103820), (9, 3191860), (10, 2872674), (12, 2393895), (14, 2051910), (15, 1915116), (18, 1595930), (20, 1436337), (21, 1367940), (28, 1025955), (30, 957558), (35, 820764), (36, 797965), (42, 683970), (45, 638372), (49, 586260), (60, 478779), (63, 455980), (70, 410382), (84, 341985), (90, 319186), (98, 293130), (105, 273588), (126, 227990), (140, 205191), (147, 195420), (180, 159593), (196, 146565), (210, 136794), (245, 117252), (252, 113995), (294, 97710), (315, 91196), (420, 68397), (441, 65140), (490, 58626), (588, 48855), (630, 45598), (735, 39084), (882, 32570), (980, 29313), (1260, 22799), (1470, 19542), (1764, 16285), (2205, 13028), (2940, 9771), (3257, 8820), (4410, 6514)]