18712980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{727}}^1$

素因数の和:766

約数の個数: 144

約数和(自身を含む): 66777984

約数和(自身を除く): 48065004

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 30, 33, 36, 39, 44, 45, 52, 55, 60, 65, 66, 78, 90, 99, 110, 117, 130, 132, 143, 156, 165, 180, 195, 198, 220, 234, 260, 286, 330, 390, 396, 429, 468, 495, 572, 585, 660, 715, 727, 780, 858, 990, 1170, 1287, 1430, 1454, 1716, 1980, 2145, 2181, 2340, 2574, 2860, 2908, 3635, 4290, 4362, 5148, 6435, 6543, 7270, 7997, 8580, 8724, 9451, 10905, 12870, 13086, 14540, 15994, 18902, 21810, 23991, 25740, 26172, 28353, 31988, 32715, 37804, 39985, 43620, 47255, 47982, 56706, 65430, 71973, 79970, 85059, 94510, 95964, 103961, 113412, 119955, 130860, 141765, 143946, 159940, 170118, 189020, 207922, 239910, 283530, 287892, 311883, 340236, 359865, 415844, 425295, 479820, 519805, 567060, 623766, 719730, 850590, 935649, 1039610, 1247532, 1439460, 1559415, 1701180, 1871298, 2079220, 3118830, 3742596, 4678245, 6237660, 9356490, 18712980]

約数ペア:

[(1, 18712980), (2, 9356490), (3, 6237660), (4, 4678245), (5, 3742596), (6, 3118830), (9, 2079220), (10, 1871298), (11, 1701180), (12, 1559415), (13, 1439460), (15, 1247532), (18, 1039610), (20, 935649), (22, 850590), (26, 719730), (30, 623766), (33, 567060), (36, 519805), (39, 479820), (44, 425295), (45, 415844), (52, 359865), (55, 340236), (60, 311883), (65, 287892), (66, 283530), (78, 239910), (90, 207922), (99, 189020), (110, 170118), (117, 159940), (130, 143946), (132, 141765), (143, 130860), (156, 119955), (165, 113412), (180, 103961), (195, 95964), (198, 94510), (220, 85059), (234, 79970), (260, 71973), (286, 65430), (330, 56706), (390, 47982), (396, 47255), (429, 43620), (468, 39985), (495, 37804), (572, 32715), (585, 31988), (660, 28353), (715, 26172), (727, 25740), (780, 23991), (858, 21810), (990, 18902), (1170, 15994), (1287, 14540), (1430, 13086), (1454, 12870), (1716, 10905), (1980, 9451), (2145, 8724), (2181, 8580), (2340, 7997), (2574, 7270), (2860, 6543), (2908, 6435), (3635, 5148), (4290, 4362)]