51472980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{21997}}^1$

素因数の和:22025

約数の個数: 72

約数和(自身を含む): 168152712

約数和(自身を除く): 116679732

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, 21997, 43994, 65991, 87988, 109985, 131982, 197973, 219970, 263964, 285961, 329955, 395946, 439940, 571922, 659910, 791892, 857883, 989865, 1143844, 1319820, 1429805, 1715766, 1979730, 2573649, 2859610, 3431532, 3959460, 4289415, 5147298, 5719220, 8578830, 10294596, 12868245, 17157660, 25736490, 51472980]

約数ペア:

[(1, 51472980), (2, 25736490), (3, 17157660), (4, 12868245), (5, 10294596), (6, 8578830), (9, 5719220), (10, 5147298), (12, 4289415), (13, 3959460), (15, 3431532), (18, 2859610), (20, 2573649), (26, 1979730), (30, 1715766), (36, 1429805), (39, 1319820), (45, 1143844), (52, 989865), (60, 857883), (65, 791892), (78, 659910), (90, 571922), (117, 439940), (130, 395946), (156, 329955), (180, 285961), (195, 263964), (234, 219970), (260, 197973), (390, 131982), (468, 109985), (585, 87988), (780, 65991), (1170, 43994), (2340, 21997)]