2780455020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{945733}}^1$

素因数の和:945759

約数の個数: 72

約数和(自身を含む): 9056348784

約数和(自身を除く): 6275893764

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 945733, 1891466, 2837199, 3782932, 4728665, 5674398, 6620131, 9457330, 11348796, 13240262, 14185995, 18914660, 19860393, 26480524, 28371990, 33100655, 39720786, 46340917, 56743980, 66201310, 79441572, 92681834, 99301965, 132402620, 139022751, 185363668, 198603930, 231704585, 278045502, 397207860, 463409170, 556091004, 695113755, 926818340, 1390227510, 2780455020]

約数ペア:

[(1, 2780455020), (2, 1390227510), (3, 926818340), (4, 695113755), (5, 556091004), (6, 463409170), (7, 397207860), (10, 278045502), (12, 231704585), (14, 198603930), (15, 185363668), (20, 139022751), (21, 132402620), (28, 99301965), (30, 92681834), (35, 79441572), (42, 66201310), (49, 56743980), (60, 46340917), (70, 39720786), (84, 33100655), (98, 28371990), (105, 26480524), (140, 19860393), (147, 18914660), (196, 14185995), (210, 13240262), (245, 11348796), (294, 9457330), (420, 6620131), (490, 5674398), (588, 4728665), (735, 3782932), (980, 2837199), (1470, 1891466), (2940, 945733)]