31418300

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 71453760

約数和(自身を除く): 40035460

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 79, 82, 97, 100, 158, 164, 194, 205, 316, 388, 395, 410, 485, 790, 820, 970, 1025, 1580, 1940, 1975, 2050, 2425, 3239, 3950, 3977, 4100, 4850, 6478, 7663, 7900, 7954, 9700, 12956, 15326, 15908, 16195, 19885, 30652, 32390, 38315, 39770, 64780, 76630, 79540, 80975, 99425, 153260, 161950, 191575, 198850, 314183, 323900, 383150, 397700, 628366, 766300, 1256732, 1570915, 3141830, 6283660, 7854575, 15709150, 31418300]

約数ペア:

[(1, 31418300), (2, 15709150), (4, 7854575), (5, 6283660), (10, 3141830), (20, 1570915), (25, 1256732), (41, 766300), (50, 628366), (79, 397700), (82, 383150), (97, 323900), (100, 314183), (158, 198850), (164, 191575), (194, 161950), (205, 153260), (316, 99425), (388, 80975), (395, 79540), (410, 76630), (485, 64780), (790, 39770), (820, 38315), (970, 32390), (1025, 30652), (1580, 19885), (1940, 16195), (1975, 15908), (2050, 15326), (2425, 12956), (3239, 9700), (3950, 7954), (3977, 7900), (4100, 7663), (4850, 6478)]