8638920

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:460

約数の個数: 128

約数和(自身を含む): 30384000

約数和(自身を除く): 21745080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 90, 95, 108, 114, 120, 135, 152, 171, 180, 190, 216, 228, 270, 285, 342, 360, 380, 421, 456, 513, 540, 570, 684, 760, 842, 855, 1026, 1080, 1140, 1263, 1368, 1684, 1710, 2052, 2105, 2280, 2526, 2565, 3368, 3420, 3789, 4104, 4210, 5052, 5130, 6315, 6840, 7578, 7999, 8420, 10104, 10260, 11367, 12630, 15156, 15998, 16840, 18945, 20520, 22734, 23997, 25260, 30312, 31996, 37890, 39995, 45468, 47994, 50520, 56835, 63992, 71991, 75780, 79990, 90936, 95988, 113670, 119985, 143982, 151560, 159980, 191976, 215973, 227340, 239970, 287964, 319960, 359955, 431946, 454680, 479940, 575928, 719910, 863892, 959880, 1079865, 1439820, 1727784, 2159730, 2879640, 4319460, 8638920]

約数ペア:

[(1, 8638920), (2, 4319460), (3, 2879640), (4, 2159730), (5, 1727784), (6, 1439820), (8, 1079865), (9, 959880), (10, 863892), (12, 719910), (15, 575928), (18, 479940), (19, 454680), (20, 431946), (24, 359955), (27, 319960), (30, 287964), (36, 239970), (38, 227340), (40, 215973), (45, 191976), (54, 159980), (57, 151560), (60, 143982), (72, 119985), (76, 113670), (90, 95988), (95, 90936), (108, 79990), (114, 75780), (120, 71991), (135, 63992), (152, 56835), (171, 50520), (180, 47994), (190, 45468), (216, 39995), (228, 37890), (270, 31996), (285, 30312), (342, 25260), (360, 23997), (380, 22734), (421, 20520), (456, 18945), (513, 16840), (540, 15998), (570, 15156), (684, 12630), (760, 11367), (842, 10260), (855, 10104), (1026, 8420), (1080, 7999), (1140, 7578), (1263, 6840), (1368, 6315), (1684, 5130), (1710, 5052), (2052, 4210), (2105, 4104), (2280, 3789), (2526, 3420), (2565, 3368)]