20815260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^2$

素因数の和:112

約数の個数: 108

約数和(自身を含む): 63559944

約数和(自身を除く): 42744684

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 31, 38, 57, 60, 62, 76, 93, 95, 114, 124, 155, 186, 190, 228, 285, 310, 361, 372, 380, 465, 570, 589, 620, 722, 930, 961, 1083, 1140, 1178, 1444, 1767, 1805, 1860, 1922, 2166, 2356, 2883, 2945, 3534, 3610, 3844, 4332, 4805, 5415, 5766, 5890, 7068, 7220, 8835, 9610, 10830, 11191, 11532, 11780, 14415, 17670, 18259, 19220, 21660, 22382, 28830, 33573, 35340, 36518, 44764, 54777, 55955, 57660, 67146, 73036, 91295, 109554, 111910, 134292, 167865, 182590, 219108, 223820, 273885, 335730, 346921, 365180, 547770, 671460, 693842, 1040763, 1095540, 1387684, 1734605, 2081526, 3469210, 4163052, 5203815, 6938420, 10407630, 20815260]

約数ペア:

[(1, 20815260), (2, 10407630), (3, 6938420), (4, 5203815), (5, 4163052), (6, 3469210), (10, 2081526), (12, 1734605), (15, 1387684), (19, 1095540), (20, 1040763), (30, 693842), (31, 671460), (38, 547770), (57, 365180), (60, 346921), (62, 335730), (76, 273885), (93, 223820), (95, 219108), (114, 182590), (124, 167865), (155, 134292), (186, 111910), (190, 109554), (228, 91295), (285, 73036), (310, 67146), (361, 57660), (372, 55955), (380, 54777), (465, 44764), (570, 36518), (589, 35340), (620, 33573), (722, 28830), (930, 22382), (961, 21660), (1083, 19220), (1140, 18259), (1178, 17670), (1444, 14415), (1767, 11780), (1805, 11532), (1860, 11191), (1922, 10830), (2166, 9610), (2356, 8835), (2883, 7220), (2945, 7068), (3534, 5890), (3610, 5766), (3844, 5415), (4332, 4805)]