19891150

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:397

約数の個数: 48

約数和(自身を含む): 39247488

約数和(自身を除く): 19356338

約数列:

[1, 2, 5, 10, 25, 31, 41, 50, 62, 82, 155, 205, 310, 313, 410, 626, 775, 1025, 1271, 1550, 1565, 2050, 2542, 3130, 6355, 7825, 9703, 12710, 12833, 15650, 19406, 25666, 31775, 48515, 63550, 64165, 97030, 128330, 242575, 320825, 397823, 485150, 641650, 795646, 1989115, 3978230, 9945575, 19891150]

約数ペア:

[(1, 19891150), (2, 9945575), (5, 3978230), (10, 1989115), (25, 795646), (31, 641650), (41, 485150), (50, 397823), (62, 320825), (82, 242575), (155, 128330), (205, 97030), (310, 64165), (313, 63550), (410, 48515), (626, 31775), (775, 25666), (1025, 19406), (1271, 15650), (1550, 12833), (1565, 12710), (2050, 9703), (2542, 7825), (3130, 6355)]