21505170

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{283}}^1$

素因数の和:459

約数の個数: 64

約数和(自身を含む): 55209600

約数和(自身を除く): 33704430

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 149, 170, 255, 283, 298, 447, 510, 566, 745, 849, 894, 1415, 1490, 1698, 2235, 2533, 2830, 4245, 4470, 4811, 5066, 7599, 8490, 9622, 12665, 14433, 15198, 24055, 25330, 28866, 37995, 42167, 48110, 72165, 75990, 84334, 126501, 144330, 210835, 253002, 421670, 632505, 716839, 1265010, 1433678, 2150517, 3584195, 4301034, 7168390, 10752585, 21505170]

約数ペア:

[(1, 21505170), (2, 10752585), (3, 7168390), (5, 4301034), (6, 3584195), (10, 2150517), (15, 1433678), (17, 1265010), (30, 716839), (34, 632505), (51, 421670), (85, 253002), (102, 210835), (149, 144330), (170, 126501), (255, 84334), (283, 75990), (298, 72165), (447, 48110), (510, 42167), (566, 37995), (745, 28866), (849, 25330), (894, 24055), (1415, 15198), (1490, 14433), (1698, 12665), (2235, 9622), (2533, 8490), (2830, 7599), (4245, 5066), (4470, 4811)]