21791970

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1877}}^1$

素因数の和:1936

約数の個数: 64

約数和(自身を含む): 59495040

約数和(自身を除く): 37703070

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 43, 45, 54, 86, 90, 129, 135, 215, 258, 270, 387, 430, 645, 774, 1161, 1290, 1877, 1935, 2322, 3754, 3870, 5631, 5805, 9385, 11262, 11610, 16893, 18770, 28155, 33786, 50679, 56310, 80711, 84465, 101358, 161422, 168930, 242133, 253395, 403555, 484266, 506790, 726399, 807110, 1210665, 1452798, 2179197, 2421330, 3631995, 4358394, 7263990, 10895985, 21791970]

約数ペア:

[(1, 21791970), (2, 10895985), (3, 7263990), (5, 4358394), (6, 3631995), (9, 2421330), (10, 2179197), (15, 1452798), (18, 1210665), (27, 807110), (30, 726399), (43, 506790), (45, 484266), (54, 403555), (86, 253395), (90, 242133), (129, 168930), (135, 161422), (215, 101358), (258, 84465), (270, 80711), (387, 56310), (430, 50679), (645, 33786), (774, 28155), (1161, 18770), (1290, 16893), (1877, 11610), (1935, 11262), (2322, 9385), (3754, 5805), (3870, 5631)]