19070980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 22841660

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 131, 145, 251, 262, 290, 502, 524, 580, 655, 1004, 1255, 1310, 2510, 2620, 3799, 5020, 7279, 7598, 14558, 15196, 18995, 29116, 32881, 36395, 37990, 65762, 72790, 75980, 131524, 145580, 164405, 328810, 657620, 953549, 1907098, 3814196, 4767745, 9535490, 19070980]

約数ペア:

[(1, 19070980), (2, 9535490), (4, 4767745), (5, 3814196), (10, 1907098), (20, 953549), (29, 657620), (58, 328810), (116, 164405), (131, 145580), (145, 131524), (251, 75980), (262, 72790), (290, 65762), (502, 37990), (524, 36395), (580, 32881), (655, 29116), (1004, 18995), (1255, 15196), (1310, 14558), (2510, 7598), (2620, 7279), (3799, 5020)]