28881580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2267}}^1$

素因数の和:2303

約数の個数: 72

約数和(自身を含む): 76014288

約数和(自身を除く): 47132708

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2267, 2548, 3185, 4534, 6370, 9068, 11335, 12740, 15869, 22670, 29471, 31738, 45340, 58942, 63476, 79345, 111083, 117884, 147355, 158690, 206297, 222166, 294710, 317380, 412594, 444332, 555415, 589420, 825188, 1031485, 1110830, 1444079, 2062970, 2221660, 2888158, 4125940, 5776316, 7220395, 14440790, 28881580]

約数ペア:

[(1, 28881580), (2, 14440790), (4, 7220395), (5, 5776316), (7, 4125940), (10, 2888158), (13, 2221660), (14, 2062970), (20, 1444079), (26, 1110830), (28, 1031485), (35, 825188), (49, 589420), (52, 555415), (65, 444332), (70, 412594), (91, 317380), (98, 294710), (130, 222166), (140, 206297), (182, 158690), (196, 147355), (245, 117884), (260, 111083), (364, 79345), (455, 63476), (490, 58942), (637, 45340), (910, 31738), (980, 29471), (1274, 22670), (1820, 15869), (2267, 12740), (2548, 11335), (3185, 9068), (4534, 6370)]