19796940

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{601}}^1$

素因数の和:680

約数の個数: 96

約数和(自身を含む): 62704320

約数和(自身を除く): 42907380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 90, 108, 122, 135, 180, 183, 244, 270, 305, 366, 540, 549, 601, 610, 732, 915, 1098, 1202, 1220, 1647, 1803, 1830, 2196, 2404, 2745, 3005, 3294, 3606, 3660, 5409, 5490, 6010, 6588, 7212, 8235, 9015, 10818, 10980, 12020, 16227, 16470, 18030, 21636, 27045, 32454, 32940, 36060, 36661, 54090, 64908, 73322, 81135, 108180, 109983, 146644, 162270, 183305, 219966, 324540, 329949, 366610, 439932, 549915, 659898, 733220, 989847, 1099830, 1319796, 1649745, 1979694, 2199660, 3299490, 3959388, 4949235, 6598980, 9898470, 19796940]

約数ペア:

[(1, 19796940), (2, 9898470), (3, 6598980), (4, 4949235), (5, 3959388), (6, 3299490), (9, 2199660), (10, 1979694), (12, 1649745), (15, 1319796), (18, 1099830), (20, 989847), (27, 733220), (30, 659898), (36, 549915), (45, 439932), (54, 366610), (60, 329949), (61, 324540), (90, 219966), (108, 183305), (122, 162270), (135, 146644), (180, 109983), (183, 108180), (244, 81135), (270, 73322), (305, 64908), (366, 54090), (540, 36661), (549, 36060), (601, 32940), (610, 32454), (732, 27045), (915, 21636), (1098, 18030), (1202, 16470), (1220, 16227), (1647, 12020), (1803, 10980), (1830, 10818), (2196, 9015), (2404, 8235), (2745, 7212), (3005, 6588), (3294, 6010), (3606, 5490), (3660, 5409)]