21905480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:127

約数の個数: 96

約数和(自身を含む): 54726840

約数和(自身を除く): 32821360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 41, 74, 76, 82, 95, 148, 152, 164, 185, 190, 205, 296, 328, 361, 370, 380, 410, 703, 722, 740, 760, 779, 820, 1406, 1444, 1480, 1517, 1558, 1640, 1805, 2812, 2888, 3034, 3116, 3515, 3610, 3895, 5624, 6068, 6232, 7030, 7220, 7585, 7790, 12136, 13357, 14060, 14440, 14801, 15170, 15580, 26714, 28120, 28823, 29602, 30340, 31160, 53428, 57646, 59204, 60680, 66785, 74005, 106856, 115292, 118408, 133570, 144115, 148010, 230584, 267140, 288230, 296020, 534280, 547637, 576460, 592040, 1095274, 1152920, 2190548, 2738185, 4381096, 5476370, 10952740, 21905480]

約数ペア:

[(1, 21905480), (2, 10952740), (4, 5476370), (5, 4381096), (8, 2738185), (10, 2190548), (19, 1152920), (20, 1095274), (37, 592040), (38, 576460), (40, 547637), (41, 534280), (74, 296020), (76, 288230), (82, 267140), (95, 230584), (148, 148010), (152, 144115), (164, 133570), (185, 118408), (190, 115292), (205, 106856), (296, 74005), (328, 66785), (361, 60680), (370, 59204), (380, 57646), (410, 53428), (703, 31160), (722, 30340), (740, 29602), (760, 28823), (779, 28120), (820, 26714), (1406, 15580), (1444, 15170), (1480, 14801), (1517, 14440), (1558, 14060), (1640, 13357), (1805, 12136), (2812, 7790), (2888, 7585), (3034, 7220), (3116, 7030), (3515, 6232), (3610, 6068), (3895, 5624)]