28891980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12347}}^1$

素因数の和:12375

約数の個数: 72

約数和(自身を含む): 94388112

約数和(自身を除く): 65496132

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 12347, 24694, 37041, 49388, 61735, 74082, 111123, 123470, 148164, 160511, 185205, 222246, 246940, 321022, 370410, 444492, 481533, 555615, 642044, 740820, 802555, 963066, 1111230, 1444599, 1605110, 1926132, 2222460, 2407665, 2889198, 3210220, 4815330, 5778396, 7222995, 9630660, 14445990, 28891980]

約数ペア:

[(1, 28891980), (2, 14445990), (3, 9630660), (4, 7222995), (5, 5778396), (6, 4815330), (9, 3210220), (10, 2889198), (12, 2407665), (13, 2222460), (15, 1926132), (18, 1605110), (20, 1444599), (26, 1111230), (30, 963066), (36, 802555), (39, 740820), (45, 642044), (52, 555615), (60, 481533), (65, 444492), (78, 370410), (90, 321022), (117, 246940), (130, 222246), (156, 185205), (180, 160511), (195, 148164), (234, 123470), (260, 111123), (390, 74082), (468, 61735), (585, 49388), (780, 37041), (1170, 24694), (2340, 12347)]