21920650

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:124

約数の個数: 72

約数和(自身を含む): 45567396

約数和(自身を除く): 23646746

約数列:

[1, 2, 5, 10, 17, 25, 34, 37, 41, 50, 74, 82, 85, 170, 185, 205, 289, 370, 410, 425, 578, 629, 697, 850, 925, 1025, 1258, 1394, 1445, 1517, 1850, 2050, 2890, 3034, 3145, 3485, 6290, 6970, 7225, 7585, 10693, 11849, 14450, 15170, 15725, 17425, 21386, 23698, 25789, 31450, 34850, 37925, 51578, 53465, 59245, 75850, 106930, 118490, 128945, 257890, 267325, 296225, 438413, 534650, 592450, 644725, 876826, 1289450, 2192065, 4384130, 10960325, 21920650]

約数ペア:

[(1, 21920650), (2, 10960325), (5, 4384130), (10, 2192065), (17, 1289450), (25, 876826), (34, 644725), (37, 592450), (41, 534650), (50, 438413), (74, 296225), (82, 267325), (85, 257890), (170, 128945), (185, 118490), (205, 106930), (289, 75850), (370, 59245), (410, 53465), (425, 51578), (578, 37925), (629, 34850), (697, 31450), (850, 25789), (925, 23698), (1025, 21386), (1258, 17425), (1394, 15725), (1445, 15170), (1517, 14450), (1850, 11849), (2050, 10693), (2890, 7585), (3034, 7225), (3145, 6970), (3485, 6290)]