215898260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:357

約数の個数: 72

約数和(自身を含む): 480453120

約数和(自身を除く): 264554860

約数列:

[1, 2, 4, 5, 10, 20, 31, 47, 62, 94, 124, 155, 188, 235, 239, 310, 470, 478, 620, 940, 956, 961, 1195, 1457, 1922, 2390, 2914, 3844, 4780, 4805, 5828, 7285, 7409, 9610, 11233, 14570, 14818, 19220, 22466, 29140, 29636, 37045, 44932, 45167, 56165, 74090, 90334, 112330, 148180, 180668, 224660, 225835, 229679, 348223, 451670, 459358, 696446, 903340, 918716, 1148395, 1392892, 1741115, 2296790, 3482230, 4593580, 6964460, 10794913, 21589826, 43179652, 53974565, 107949130, 215898260]

約数ペア:

[(1, 215898260), (2, 107949130), (4, 53974565), (5, 43179652), (10, 21589826), (20, 10794913), (31, 6964460), (47, 4593580), (62, 3482230), (94, 2296790), (124, 1741115), (155, 1392892), (188, 1148395), (235, 918716), (239, 903340), (310, 696446), (470, 459358), (478, 451670), (620, 348223), (940, 229679), (956, 225835), (961, 224660), (1195, 180668), (1457, 148180), (1922, 112330), (2390, 90334), (2914, 74090), (3844, 56165), (4780, 45167), (4805, 44932), (5828, 37045), (7285, 29636), (7409, 29140), (9610, 22466), (11233, 19220), (14570, 14818)]