19978110

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1213}}^1$

素因数の和:1290

約数の個数: 64

約数和(自身を含む): 54192960

約数和(自身を除く): 34214850

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 61, 90, 122, 135, 183, 270, 305, 366, 549, 610, 915, 1098, 1213, 1647, 1830, 2426, 2745, 3294, 3639, 5490, 6065, 7278, 8235, 10917, 12130, 16470, 18195, 21834, 32751, 36390, 54585, 65502, 73993, 109170, 147986, 163755, 221979, 327510, 369965, 443958, 665937, 739930, 1109895, 1331874, 1997811, 2219790, 3329685, 3995622, 6659370, 9989055, 19978110]

約数ペア:

[(1, 19978110), (2, 9989055), (3, 6659370), (5, 3995622), (6, 3329685), (9, 2219790), (10, 1997811), (15, 1331874), (18, 1109895), (27, 739930), (30, 665937), (45, 443958), (54, 369965), (61, 327510), (90, 221979), (122, 163755), (135, 147986), (183, 109170), (270, 73993), (305, 65502), (366, 54585), (549, 36390), (610, 32751), (915, 21834), (1098, 18195), (1213, 16470), (1647, 12130), (1830, 10917), (2426, 8235), (2745, 7278), (3294, 6065), (3639, 5490)]