279869940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{571}}^1$

素因数の和:982

約数の個数: 144

約数和(自身を含む): 974413440

約数和(自身を除く): 694543500

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, 389, 420, 571, 630, 778, 1142, 1167, 1260, 1556, 1713, 1945, 2284, 2334, 2723, 2855, 3426, 3501, 3890, 3997, 4668, 5139, 5446, 5710, 5835, 6852, 7002, 7780, 7994, 8169, 8565, 10278, 10892, 11420, 11670, 11991, 13615, 14004, 15988, 16338, 17130, 17505, 19985, 20556, 23340, 23982, 24507, 25695, 27230, 32676, 34260, 35010, 35973, 39970, 40845, 47964, 49014, 51390, 54460, 59955, 70020, 71946, 79940, 81690, 98028, 102780, 119910, 122535, 143892, 163380, 179865, 222119, 239820, 245070, 359730, 444238, 490140, 666357, 719460, 888476, 1110595, 1332714, 1554833, 1999071, 2221190, 2665428, 3109666, 3331785, 3998142, 4442380, 4664499, 6219332, 6663570, 7774165, 7996284, 9328998, 9995355, 13327140, 13993497, 15548330, 18657996, 19990710, 23322495, 27986994, 31096660, 39981420, 46644990, 55973988, 69967485, 93289980, 139934970, 279869940]

約数ペア:

[(1, 279869940), (2, 139934970), (3, 93289980), (4, 69967485), (5, 55973988), (6, 46644990), (7, 39981420), (9, 31096660), (10, 27986994), (12, 23322495), (14, 19990710), (15, 18657996), (18, 15548330), (20, 13993497), (21, 13327140), (28, 9995355), (30, 9328998), (35, 7996284), (36, 7774165), (42, 6663570), (45, 6219332), (60, 4664499), (63, 4442380), (70, 3998142), (84, 3331785), (90, 3109666), (105, 2665428), (126, 2221190), (140, 1999071), (180, 1554833), (210, 1332714), (252, 1110595), (315, 888476), (389, 719460), (420, 666357), (571, 490140), (630, 444238), (778, 359730), (1142, 245070), (1167, 239820), (1260, 222119), (1556, 179865), (1713, 163380), (1945, 143892), (2284, 122535), (2334, 119910), (2723, 102780), (2855, 98028), (3426, 81690), (3501, 79940), (3890, 71946), (3997, 70020), (4668, 59955), (5139, 54460), (5446, 51390), (5710, 49014), (5835, 47964), (6852, 40845), (7002, 39970), (7780, 35973), (7994, 35010), (8169, 34260), (8565, 32676), (10278, 27230), (10892, 25695), (11420, 24507), (11670, 23982), (11991, 23340), (13615, 20556), (14004, 19985), (15988, 17505), (16338, 17130)]