18915708920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{433}}^1\times {\mathrm{3779}}^1$

素因数の和:4257

約数の個数: 96

約数和(自身を含む): 45327567600

約数和(自身を除く): 26411858680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 433, 578, 680, 866, 1156, 1445, 1732, 2165, 2312, 2890, 3464, 3779, 4330, 5780, 7361, 7558, 8660, 11560, 14722, 15116, 17320, 18895, 29444, 30232, 36805, 37790, 58888, 64243, 73610, 75580, 125137, 128486, 147220, 151160, 250274, 256972, 294440, 321215, 500548, 513944, 625685, 642430, 1001096, 1092131, 1251370, 1284860, 1636307, 2184262, 2502740, 2569720, 3272614, 4368524, 5005480, 5460655, 6545228, 8181535, 8737048, 10921310, 13090456, 16363070, 21842620, 27817219, 32726140, 43685240, 55634438, 65452280, 111268876, 139086095, 222537752, 278172190, 472892723, 556344380, 945785446, 1112688760, 1891570892, 2364463615, 3783141784, 4728927230, 9457854460, 18915708920]

約数ペア:

[(1, 18915708920), (2, 9457854460), (4, 4728927230), (5, 3783141784), (8, 2364463615), (10, 1891570892), (17, 1112688760), (20, 945785446), (34, 556344380), (40, 472892723), (68, 278172190), (85, 222537752), (136, 139086095), (170, 111268876), (289, 65452280), (340, 55634438), (433, 43685240), (578, 32726140), (680, 27817219), (866, 21842620), (1156, 16363070), (1445, 13090456), (1732, 10921310), (2165, 8737048), (2312, 8181535), (2890, 6545228), (3464, 5460655), (3779, 5005480), (4330, 4368524), (5780, 3272614), (7361, 2569720), (7558, 2502740), (8660, 2184262), (11560, 1636307), (14722, 1284860), (15116, 1251370), (17320, 1092131), (18895, 1001096), (29444, 642430), (30232, 625685), (36805, 513944), (37790, 500548), (58888, 321215), (64243, 294440), (73610, 256972), (75580, 250274), (125137, 151160), (128486, 147220)]