81228940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{2069}}^1$

素因数の和:2242

約数の個数: 48

約数和(自身を含む): 185008320

約数和(自身を除く): 103779380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 151, 260, 302, 604, 755, 1510, 1963, 2069, 3020, 3926, 4138, 7852, 8276, 9815, 10345, 19630, 20690, 26897, 39260, 41380, 53794, 107588, 134485, 268970, 312419, 537940, 624838, 1249676, 1562095, 3124190, 4061447, 6248380, 8122894, 16245788, 20307235, 40614470, 81228940]

約数ペア:

[(1, 81228940), (2, 40614470), (4, 20307235), (5, 16245788), (10, 8122894), (13, 6248380), (20, 4061447), (26, 3124190), (52, 1562095), (65, 1249676), (130, 624838), (151, 537940), (260, 312419), (302, 268970), (604, 134485), (755, 107588), (1510, 53794), (1963, 41380), (2069, 39260), (3020, 26897), (3926, 20690), (4138, 19630), (7852, 10345), (8276, 9815)]