20999370

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{277}}^1$

素因数の和:332

約数の個数: 96

約数和(自身を含む): 61008768

約数和(自身を除く): 40009398

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 190, 210, 266, 277, 285, 361, 399, 554, 570, 665, 722, 798, 831, 1083, 1330, 1385, 1662, 1805, 1939, 1995, 2166, 2527, 2770, 3610, 3878, 3990, 4155, 5054, 5263, 5415, 5817, 7581, 8310, 9695, 10526, 10830, 11634, 12635, 15162, 15789, 19390, 25270, 26315, 29085, 31578, 36841, 37905, 52630, 58170, 73682, 75810, 78945, 99997, 110523, 157890, 184205, 199994, 221046, 299991, 368410, 499985, 552615, 599982, 699979, 999970, 1105230, 1399958, 1499955, 2099937, 2999910, 3499895, 4199874, 6999790, 10499685, 20999370]

約数ペア:

[(1, 20999370), (2, 10499685), (3, 6999790), (5, 4199874), (6, 3499895), (7, 2999910), (10, 2099937), (14, 1499955), (15, 1399958), (19, 1105230), (21, 999970), (30, 699979), (35, 599982), (38, 552615), (42, 499985), (57, 368410), (70, 299991), (95, 221046), (105, 199994), (114, 184205), (133, 157890), (190, 110523), (210, 99997), (266, 78945), (277, 75810), (285, 73682), (361, 58170), (399, 52630), (554, 37905), (570, 36841), (665, 31578), (722, 29085), (798, 26315), (831, 25270), (1083, 19390), (1330, 15789), (1385, 15162), (1662, 12635), (1805, 11634), (1939, 10830), (1995, 10526), (2166, 9695), (2527, 8310), (2770, 7581), (3610, 5817), (3878, 5415), (3990, 5263), (4155, 5054)]