21305970

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{11273}}^1$

素因数の和:11296

約数の個数: 64

約数和(自身を含む): 64938240

約数和(自身を除く): 43632270

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 11273, 22546, 33819, 56365, 67638, 78911, 101457, 112730, 157822, 169095, 202914, 236733, 304371, 338190, 394555, 473466, 507285, 608742, 710199, 789110, 1014570, 1183665, 1420398, 1521855, 2130597, 2367330, 3043710, 3550995, 4261194, 7101990, 10652985, 21305970]

約数ペア:

[(1, 21305970), (2, 10652985), (3, 7101990), (5, 4261194), (6, 3550995), (7, 3043710), (9, 2367330), (10, 2130597), (14, 1521855), (15, 1420398), (18, 1183665), (21, 1014570), (27, 789110), (30, 710199), (35, 608742), (42, 507285), (45, 473466), (54, 394555), (63, 338190), (70, 304371), (90, 236733), (105, 202914), (126, 169095), (135, 157822), (189, 112730), (210, 101457), (270, 78911), (315, 67638), (378, 56365), (630, 33819), (945, 22546), (1890, 11273)]