389915820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{309457}}^1$

素因数の和:309479

約数の個数: 72

約数和(自身を含む): 1351712544

約数和(自身を除く): 961796724

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 309457, 618914, 928371, 1237828, 1547285, 1856742, 2166199, 2785113, 3094570, 3713484, 4332398, 4641855, 5570226, 6189140, 6498597, 8664796, 9283710, 10830995, 11140452, 12997194, 13925565, 18567420, 19495791, 21661990, 25994388, 27851130, 32492985, 38991582, 43323980, 55702260, 64985970, 77983164, 97478955, 129971940, 194957910, 389915820]

約数ペア:

[(1, 389915820), (2, 194957910), (3, 129971940), (4, 97478955), (5, 77983164), (6, 64985970), (7, 55702260), (9, 43323980), (10, 38991582), (12, 32492985), (14, 27851130), (15, 25994388), (18, 21661990), (20, 19495791), (21, 18567420), (28, 13925565), (30, 12997194), (35, 11140452), (36, 10830995), (42, 9283710), (45, 8664796), (60, 6498597), (63, 6189140), (70, 5570226), (84, 4641855), (90, 4332398), (105, 3713484), (126, 3094570), (140, 2785113), (180, 2166199), (210, 1856742), (252, 1547285), (315, 1237828), (420, 928371), (630, 618914), (1260, 309457)]