19245940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 49674240

約数和(自身を除く): 30428300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 43, 46, 70, 86, 92, 115, 139, 140, 161, 172, 215, 230, 278, 301, 322, 430, 460, 556, 602, 644, 695, 805, 860, 973, 989, 1204, 1390, 1505, 1610, 1946, 1978, 2780, 3010, 3197, 3220, 3892, 3956, 4865, 4945, 5977, 6020, 6394, 6923, 9730, 9890, 11954, 12788, 13846, 15985, 19460, 19780, 22379, 23908, 27692, 29885, 31970, 34615, 41839, 44758, 59770, 63940, 69230, 83678, 89516, 111895, 119540, 137471, 138460, 167356, 209195, 223790, 274942, 418390, 447580, 549884, 687355, 836780, 962297, 1374710, 1924594, 2749420, 3849188, 4811485, 9622970, 19245940]

約数ペア:

[(1, 19245940), (2, 9622970), (4, 4811485), (5, 3849188), (7, 2749420), (10, 1924594), (14, 1374710), (20, 962297), (23, 836780), (28, 687355), (35, 549884), (43, 447580), (46, 418390), (70, 274942), (86, 223790), (92, 209195), (115, 167356), (139, 138460), (140, 137471), (161, 119540), (172, 111895), (215, 89516), (230, 83678), (278, 69230), (301, 63940), (322, 59770), (430, 44758), (460, 41839), (556, 34615), (602, 31970), (644, 29885), (695, 27692), (805, 23908), (860, 22379), (973, 19780), (989, 19460), (1204, 15985), (1390, 13846), (1505, 12788), (1610, 11954), (1946, 9890), (1978, 9730), (2780, 6923), (3010, 6394), (3197, 6020), (3220, 5977), (3892, 4945), (3956, 4865)]