91015900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:415

約数の個数: 72

約数和(自身を含む): 205611840

約数和(自身を除く): 114595940

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 79, 82, 100, 158, 164, 205, 281, 316, 395, 410, 562, 790, 820, 1025, 1124, 1405, 1580, 1975, 2050, 2810, 3239, 3950, 4100, 5620, 6478, 7025, 7900, 11521, 12956, 14050, 16195, 22199, 23042, 28100, 32390, 44398, 46084, 57605, 64780, 80975, 88796, 110995, 115210, 161950, 221990, 230420, 288025, 323900, 443980, 554975, 576050, 910159, 1109950, 1152100, 1820318, 2219900, 3640636, 4550795, 9101590, 18203180, 22753975, 45507950, 91015900]

約数ペア:

[(1, 91015900), (2, 45507950), (4, 22753975), (5, 18203180), (10, 9101590), (20, 4550795), (25, 3640636), (41, 2219900), (50, 1820318), (79, 1152100), (82, 1109950), (100, 910159), (158, 576050), (164, 554975), (205, 443980), (281, 323900), (316, 288025), (395, 230420), (410, 221990), (562, 161950), (790, 115210), (820, 110995), (1025, 88796), (1124, 80975), (1405, 64780), (1580, 57605), (1975, 46084), (2050, 44398), (2810, 32390), (3239, 28100), (3950, 23042), (4100, 22199), (5620, 16195), (6478, 14050), (7025, 12956), (7900, 11521)]