19138990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 39989376

約数和(自身を除く): 20850386

約数列:

[1, 2, 5, 10, 13, 23, 26, 37, 46, 65, 74, 115, 130, 173, 185, 230, 299, 346, 370, 481, 598, 851, 865, 962, 1495, 1702, 1730, 2249, 2405, 2990, 3979, 4255, 4498, 4810, 6401, 7958, 8510, 11063, 11245, 12802, 19895, 22126, 22490, 32005, 39790, 51727, 55315, 64010, 83213, 103454, 110630, 147223, 166426, 258635, 294446, 416065, 517270, 736115, 832130, 1472230, 1913899, 3827798, 9569495, 19138990]

約数ペア:

[(1, 19138990), (2, 9569495), (5, 3827798), (10, 1913899), (13, 1472230), (23, 832130), (26, 736115), (37, 517270), (46, 416065), (65, 294446), (74, 258635), (115, 166426), (130, 147223), (173, 110630), (185, 103454), (230, 83213), (299, 64010), (346, 55315), (370, 51727), (481, 39790), (598, 32005), (851, 22490), (865, 22126), (962, 19895), (1495, 12802), (1702, 11245), (1730, 11063), (2249, 8510), (2405, 7958), (2990, 6401), (3979, 4810), (4255, 4498)]