20494150

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:357

約数の個数: 48

約数和(自身を含む): 40497408

約数和(自身を除く): 20003258

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 71, 115, 142, 230, 251, 355, 502, 575, 710, 1150, 1255, 1633, 1775, 2510, 3266, 3550, 5773, 6275, 8165, 11546, 12550, 16330, 17821, 28865, 35642, 40825, 57730, 81650, 89105, 144325, 178210, 288650, 409883, 445525, 819766, 891050, 2049415, 4098830, 10247075, 20494150]

約数ペア:

[(1, 20494150), (2, 10247075), (5, 4098830), (10, 2049415), (23, 891050), (25, 819766), (46, 445525), (50, 409883), (71, 288650), (115, 178210), (142, 144325), (230, 89105), (251, 81650), (355, 57730), (502, 40825), (575, 35642), (710, 28865), (1150, 17821), (1255, 16330), (1633, 12550), (1775, 11546), (2510, 8165), (3266, 6275), (3550, 5773)]