19664240

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{761}}^1$

素因数の和:810

約数の個数: 80

約数和(自身を含む): 51023520

約数和(自身を除く): 31359280

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 170, 190, 272, 304, 323, 340, 380, 646, 680, 760, 761, 1292, 1360, 1520, 1522, 1615, 2584, 3044, 3230, 3805, 5168, 6088, 6460, 7610, 12176, 12920, 12937, 14459, 15220, 25840, 25874, 28918, 30440, 51748, 57836, 60880, 64685, 72295, 103496, 115672, 129370, 144590, 206992, 231344, 245803, 258740, 289180, 491606, 517480, 578360, 983212, 1034960, 1156720, 1229015, 1966424, 2458030, 3932848, 4916060, 9832120, 19664240]

約数ペア:

[(1, 19664240), (2, 9832120), (4, 4916060), (5, 3932848), (8, 2458030), (10, 1966424), (16, 1229015), (17, 1156720), (19, 1034960), (20, 983212), (34, 578360), (38, 517480), (40, 491606), (68, 289180), (76, 258740), (80, 245803), (85, 231344), (95, 206992), (136, 144590), (152, 129370), (170, 115672), (190, 103496), (272, 72295), (304, 64685), (323, 60880), (340, 57836), (380, 51748), (646, 30440), (680, 28918), (760, 25874), (761, 25840), (1292, 15220), (1360, 14459), (1520, 12937), (1522, 12920), (1615, 12176), (2584, 7610), (3044, 6460), (3230, 6088), (3805, 5168)]