18615440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:400

約数の個数: 80

約数和(自身を含む): 46931520

約数和(自身を除く): 28316080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 37, 38, 40, 74, 76, 80, 95, 148, 152, 185, 190, 296, 304, 331, 370, 380, 592, 662, 703, 740, 760, 1324, 1406, 1480, 1520, 1655, 2648, 2812, 2960, 3310, 3515, 5296, 5624, 6289, 6620, 7030, 11248, 12247, 12578, 13240, 14060, 24494, 25156, 26480, 28120, 31445, 48988, 50312, 56240, 61235, 62890, 97976, 100624, 122470, 125780, 195952, 232693, 244940, 251560, 465386, 489880, 503120, 930772, 979760, 1163465, 1861544, 2326930, 3723088, 4653860, 9307720, 18615440]

約数ペア:

[(1, 18615440), (2, 9307720), (4, 4653860), (5, 3723088), (8, 2326930), (10, 1861544), (16, 1163465), (19, 979760), (20, 930772), (37, 503120), (38, 489880), (40, 465386), (74, 251560), (76, 244940), (80, 232693), (95, 195952), (148, 125780), (152, 122470), (185, 100624), (190, 97976), (296, 62890), (304, 61235), (331, 56240), (370, 50312), (380, 48988), (592, 31445), (662, 28120), (703, 26480), (740, 25156), (760, 24494), (1324, 14060), (1406, 13240), (1480, 12578), (1520, 12247), (1655, 11248), (2648, 7030), (2812, 6620), (2960, 6289), (3310, 5624), (3515, 5296)]