20521494

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{439}}^1$

素因数の和:514

約数の個数: 72

約数和(自身を含む): 52818480

約数和(自身を除く): 32296986

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 53, 63, 98, 106, 126, 147, 159, 294, 318, 371, 439, 441, 477, 742, 878, 882, 954, 1113, 1317, 2226, 2597, 2634, 3073, 3339, 3951, 5194, 6146, 6678, 7791, 7902, 9219, 15582, 18438, 21511, 23267, 23373, 27657, 43022, 46534, 46746, 55314, 64533, 69801, 129066, 139602, 162869, 193599, 209403, 325738, 387198, 418806, 488607, 977214, 1140083, 1465821, 2280166, 2931642, 3420249, 6840498, 10260747, 20521494]

約数ペア:

[(1, 20521494), (2, 10260747), (3, 6840498), (6, 3420249), (7, 2931642), (9, 2280166), (14, 1465821), (18, 1140083), (21, 977214), (42, 488607), (49, 418806), (53, 387198), (63, 325738), (98, 209403), (106, 193599), (126, 162869), (147, 139602), (159, 129066), (294, 69801), (318, 64533), (371, 55314), (439, 46746), (441, 46534), (477, 43022), (742, 27657), (878, 23373), (882, 23267), (954, 21511), (1113, 18438), (1317, 15582), (2226, 9219), (2597, 7902), (2634, 7791), (3073, 6678), (3339, 6146), (3951, 5194)]