21458790

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 40749210

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 27, 30, 38, 45, 47, 54, 57, 89, 90, 94, 95, 114, 135, 141, 171, 178, 190, 235, 267, 270, 282, 285, 342, 423, 445, 470, 513, 534, 570, 705, 801, 846, 855, 890, 893, 1026, 1269, 1335, 1410, 1602, 1691, 1710, 1786, 2115, 2403, 2538, 2565, 2670, 2679, 3382, 4005, 4183, 4230, 4465, 4806, 5073, 5130, 5358, 6345, 8010, 8037, 8366, 8455, 8930, 10146, 12015, 12549, 12690, 13395, 15219, 16074, 16910, 20915, 24030, 24111, 25098, 25365, 26790, 30438, 37647, 40185, 41830, 45657, 48222, 50730, 62745, 75294, 76095, 79477, 80370, 91314, 112941, 120555, 125490, 152190, 158954, 188235, 225882, 228285, 238431, 241110, 376470, 397385, 456570, 476862, 564705, 715293, 794770, 1129410, 1192155, 1430586, 2145879, 2384310, 3576465, 4291758, 7152930, 10729395, 21458790]

約数ペア:

[(1, 21458790), (2, 10729395), (3, 7152930), (5, 4291758), (6, 3576465), (9, 2384310), (10, 2145879), (15, 1430586), (18, 1192155), (19, 1129410), (27, 794770), (30, 715293), (38, 564705), (45, 476862), (47, 456570), (54, 397385), (57, 376470), (89, 241110), (90, 238431), (94, 228285), (95, 225882), (114, 188235), (135, 158954), (141, 152190), (171, 125490), (178, 120555), (190, 112941), (235, 91314), (267, 80370), (270, 79477), (282, 76095), (285, 75294), (342, 62745), (423, 50730), (445, 48222), (470, 45657), (513, 41830), (534, 40185), (570, 37647), (705, 30438), (801, 26790), (846, 25365), (855, 25098), (890, 24111), (893, 24030), (1026, 20915), (1269, 16910), (1335, 16074), (1410, 15219), (1602, 13395), (1691, 12690), (1710, 12549), (1786, 12015), (2115, 10146), (2403, 8930), (2538, 8455), (2565, 8366), (2670, 8037), (2679, 8010), (3382, 6345), (4005, 5358), (4183, 5130), (4230, 5073), (4465, 4806)]